Managing Control Signaling Overhead For Multi-Carrier HSDPA

ABSTRACT

Systems and methods for managing control signaling overhead for a multi-carrier HSDPA (MC-HSDPA) may be disclosed. In particular, a plurality of downlink carriers may be received and bundled or paired. Configuration information indicative of the bundling may then be generated and transmitted. Additionally, one or more components such as antennas, user equipment (UE), and the like may receive an indication of a configuration or state via a high speed shared control channel (HS-SCCH) order where the indication includes order bits and order types and the configuration may be applied to activate and/or deactivate the components or operations such as uplink closed-loop transmit diversity (CLTD), uplink multiple-input multiple-output (MIMO). The order bits and/or order types may also be extended to support the activation/deactivation of additional carriers of MC-HSDPA.

CROSS-REFERENCE

This application claims benefit under 35 U.S.C. §119(e) of provisionalU.S. Patent Application Nos. 61/441,949, 61/480,804, and 61/522,972, thedisclosures of which are incorporated herein by reference.

BACKGROUND

Typically, wireless communication systems provide data bandwidth for endusers operating a mobile device such as a mobile phone, laptop, tablet,and the like such that the end users may access email, web content, andthe like via the mobile device. Currently, the demand from end users forsuch mobile devices and data bandwidth has continued to increase.Unfortunately, data bandwidth currently available today tends to belimited and does not meet the demand from the end users. As such, anumber of wireless communication techniques have been developed toimprove data bandwidth. One such technique included in wirelesscommunication systems to improve data bandwidth includes dual-cellHigh-Speed Downlink Packet Access (HSDPA) or multi-carrier HSDPA(MC-HSDPA). Such dual-cell or MC-HSDPA may provide the simultaneous useof multiple HSDPA carriers or cells such that the available per userdata rate and bandwidth may be increased. For example, such dual-cellHSDPA may provide the simultaneous use of two cells or carriers in aHSDPA operation such that the per user data rate and bandwidth may bedoubled from a single cell HSDPA. Likewise, MC-HSDPA may provide thesimultaneous use of, for example, four HSDPA downlink carriers or cells(i.e. 4C-HSDPA) doubling the per user data rate or bandwidth from adual-cell HSDPA, and eight carrier HSDPA (i.e. 8C-HSDPA) furtherdoubling the available per user data rate or bandwidth.

Although the increased number of carriers for HSDPA operations (e.g.eight-carrier HSDPA (i.e. 8C-HSDPA)) enables higher downlink carrierthroughput and improved user data rates or bandwidth, feedback and/orcontrol information used to support such additional carriers and theload therefor also increases by approximately the same factor as theincreased/additional bandwidth provided by the downlink carriers.Additionally/Furthermore, HS-SCCH orders for activation and/ordeactivation of UL CLTD or secondary cells used to support suchadditional carriers (e.g. carriers 5-8 in 8C-HSDPA) may also increase.Unfortunately, current techniques may not be suitable to reduce the loadassociated with the increased amount feedback and/or control informationand may be insufficient to activate and/or deactivate UL CLTD(s) orsecondary cells associated with the additional carriers (e.g. the 5-8additional carriers associated with 8C-HSDPA).

SUMMARY

Systems and methods for managing control signaling overhead for amulti-carrier HSDPA are disclosed. According to an aspect, a methodincludes receiving a plurality of downlink carriers. Further, the methodincludes bundling the plurality of downlink carriers. The method alsoincludes using a mapping technique to unbundle the downlink carriers.The method may include signaling the bundling of the downlink carriersto UE.

Additionally, activation/deactivation of uplink (UL) closed-looptransmit diversity (CLTD) and/or MIMO, as well as control of UE antennaoperations may be provided. For example, High Speed Shared ControlChannel (HS-SCCH) orders may be used to activate/deactivate UL CLTD/MIMOand/or control UE antenna operation. One or more bits and/or orders maybe utilized to activate/deactivate UL CLTD/MIMO antenna configurations.A state based technique for determining UL CLTD/MIMO antennaconfigurations may be implemented. An indication of the state may besent via a HS-SCCH order. In an example, a single bit may be used toactivate/deactivation UL CLTD. Separate bits, for example several singlebits, may be used for UL CLTD activation/deactivation, antennaselection, S-DPCCH activation/deactivation, and/or UL MIMOactivation/deactivation. Control of UE pre-coding tables may also besignaled, for example via HS-SCCH order(s).

The Summary is provided to introduce a selection of concepts in asimplified form that are further described below in the DetailedDescription. This Summary is not intended to identify key features oressential features of the claimed subject matter, not is it intended tobe used to limit the scope of the claimed subject matter. Furthermore,the claimed subject matter is not limited to any limitations that solveany or all disadvantages noted in any part of this disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

A more detailed understanding of the embodiments disclosed herein may behad from the following description, given by way of example inconjunction with the accompanying drawings.

FIG. 1A depicts a diagram of an example communications system in whichone or more disclosed embodiments may be implemented.

FIG. 1B depicts a system diagram of an example wireless transmit/receiveunit (WTRU) that may be used within the communications systemillustrated in FIG. 1A.

FIG. 1C depicts a system diagram of an example radio access network andan example core network that may be used within the communicationssystem illustrated in FIG. 1A.

FIG. 1D depicts a system diagram of another example radio access networkand an example core network that may be used within the communicationssystem illustrated in FIG. 1A.

FIG. 1E depicts a system diagram of another example radio access networkand an example core network that may be used within the communicationssystem illustrated in FIG. 1A.

FIG. 2 illustrates a flow diagram of an example embodiment of pairingand/or bundling carriers in MC-HSDPA.

FIG. 3 illustrates a diagram of an example embodiment of 8C-HSDPA withpaired carriers.

FIG. 4 illustrates a diagram of an example embodiment of 8C-HSDPA withpaired and unpaired carriers.

FIG. 5 illustrates a diagram of an example embodiment of a data splitterfor a bundled carrier.

FIG. 6 illustrates a diagram of an example embodiment of a data splitterfor a paired carrier.

FIG. 7 illustrates a diagram of an example embodiment of a coding chainscheme for joint HS-SCCH of a bundled carrier configured for a non-MIMOmode.

FIG. 8 illustrates a diagram of a coding chain scheme of joint HS-SCCHfor a bundled carrier configured MIMO mode according to an embodiment;

FIG. 9 illustrates an example embodiment of a transmission timeline from1 DL to Multiple DL by two HS-SCCH orders in 8C-HSDPA configured with 1UL frequency.

FIG. 10 illustrates an example embodiment of a transmission timelinefrom 1 DL to Multiple DL by two HS-SCCH orders in 8C-HSDPA configuredwith 2 UL frequencies.

FIG. 11 illustrates an example embodiment of a codebook switching schemebased on a HS-SCCH order.

FIG. 12 illustrates an example embodiment of a dual codebook switchingscheme based on a HS-SCCH order.

FIG. 13 illustrates an example embodiment of a three-codebook switchingscheme based on a HS-SCCH order.

DETAILED DESCRIPTION

Systems and methods are disclosed herein for managing feedback and/orcontrol information and signaling in multi-carrier HSDPA (MC-HSDPA)and/or for providing channel orders such as High Speed Shared ControlChannel (HS-SCCH) orders for activation and/or deactivation of uplinkclosed-loop transmit diversity (UL CLTD), uplink multiple-inputmultiple-output (UL MIMO), or secondary cells (or carriers) in MC-HSDPA.As described above, in current wireless communication systems, the databandwidth available for each user tends to be limited and typically doesnot meet the demand from the users. As such, to increase or improve thedata bandwidth, the number of carriers used in HSDPA may be increased.For example, instead of a single carrier, multi-carrier HSDPA (MC-HSDPA)may be implemented in a wireless communication system such that twocarriers, four carriers, eight carriers, and the like may be used totransmit data instead of one carrier thereby increasing the databandwidth available. Unfortunately, as described above, the feedbackand/or control information and signaling used to support such additionalcarriers and the load therefor may also increase. For example, theamount of L1 control information and signaling that may be used tosupport additional carriers (e.g. carriers 5-8) in MC-HSDPA may increaseby approximately the same factor as the increased number of carriers if,for example, the current high speed (HS) channel structure such asHS-SCCH, HS-DPCCH, and the like and scheduling functionality may beused. Additionally, the current HS channel structure such as HS-SCCH maybe insufficient to activate and/or deactivate UL CLTD(s) or secondarycells associated with the additional carriers (e.g. the 5-8 additionalcarriers associated with 8C-HSDPA).

To reduce the load associated with the feedback and/or controlinformation for the additional carriers in MC-HSDPA, various methodsand/or techniques may be implemented. One such method and/or techniquemay include using a High-Speed Dedicated Physical Control Channel(HS-DPCCH) with a higher capacity and a lower spread factor (SF) totransmit and/or signal feedback and/or control information. For example,for an eight-carrier HSDPA (i.e. 8C-HSDPA), a HS-DPCCH with a highercapacity (e.g. with a payload on HS-DPCCH such as HARQ-ACK/NACK andChannel Quality Indicator (CQI) and/or CQI/Precoding Channel Indicator(PCI) that may be doubled for 8C-HSDPA compared to 4C-HSDPA) and a SF of64 may be used to transmit and/or signal feedback and/or controlinformation. Unfortunately, the transport power from, for example, a UEthat may be used to implement such a method and/or technique alsoincreases with the increase in the number of carriers. For example, thetransport power from a UE that may use 8C-HSDPA may be higher than thetransport power from a UE that may use 4C-HSDPA when using HS-DPCCH witha higher capacity and a lower SF to transmit and/or signal theadditional feedback and/or control information for the additionalcarriers (e.g. carriers 5-8).

Another such method and/or technique may include spreading the loadassociated with the feedback and/or control information over multipleHS-DPCCHs when, for example, transmitting and/or signaling the feedbackand/or control information. For example, the increased feedback and/orcontrol information for MC-HSDPA (e.g. 8C-HSDPA) may be spread among twoor more HS-DPCCHs. Unfortunately, the use of multiple HS-DPCCHs forspreading the load associated with the increased amount of feedbackand/or control information may result in a higher or increased CubicMetric (CM) that may be based on a UE transmit channel configuration andmay be defined by

CM=CEIL{[20*log 10((v_norm³)_(rms))−20*log10((v_norm_ref³)_(rms))]/k,0.5}

and/or reduced coverage areas.

Another such method and/or technique as disclosed herein may includeparing and/or bundling one or more of the carriers in or associated withMC-HSDPA to reduce the amount of feedback and/or control informationtransmitted and/or signaled. For example, two or more downlink carriersmay be paired or bundled and mapped together to carry a single TransportBlock (TrBlk) such that the feedback and/or control information for thepair of carriers associated with a single TrBlk may be reduced (e.g. theamount of feedback and/or control information, the load associated withthe feedback and/or control information, and/or scheduling gain may bereduced). Additionally, a HS-DPCCH with, for example, a higher SF suchas an SF of 128 may be used to signal and/or feedback such informationsuch that the transport power may be the same or similar to the transmitpower currently used by a UE in a wireless communication system and,thus, may not be increased as described above. For example, by pairingand/or bundling multiple carriers together and reducing the amount offeedback and/or control information, a HS-DPCCH with a higher SF such asa SF of 128 included a wireless communication system that may implementfour downlink carrier for HSDPA (i.e. 4C-HSDPA) may be reused when thenumber of downlink carriers used for HSDPA may be increased, forexample, to eight downlink carriers (i.e. 8C-HSDPA), and, as such, thepower transmit used by a UE may be similar regardless of the number ofdownlink carriers increasing.

Along with pairing and/or bundling multiple carriers in MC-HSDPA,downlink (DL) control signaling such as HS-SCCH(s) for data demodulationand/or HS-SCCH order(s) for activation and/or deactivation of secondaryserving HS-DSCH cells and the secondary uplink frequency may also beredesigned or optimized to further improve efficiency and decreaseoverhead using the systems and/or methods as disclosed herein.Additionally, HS-SCCH order(s) for activation and/or deactivation ofuplink closed-loop transmit diversity (UL CLTD) and uplink MIMO (ULMIMO) may also be optimized to further improve efficiency and reduceoverhead using the systems and methods disclosed herein.

FIG. 1A is a diagram of an example communications system 100 in whichone or more disclosed embodiments for managing feedback and/or controlinformation and signaling in multi-carrier HSDPA (MC-HSDPA) and/or forproviding channel orders such as High Speed Shared Control Channel(HS-SCCH) orders for activation and/or deactivation of uplinkclosed-loop transmit diversity (UL CLTD), uplink multiple-inputmultiple-output (UL MIMO), or secondary cells that may be used tosupport carriers used in MC-HSDPA may be implemented. The communicationssystem 100 may be a multiple access system that provides content, suchas voice, data, video, messaging, broadcast, etc., to multiple wirelessusers. The communications system 100 may enable multiple wireless usersto access such content through the sharing of system resources,including wireless bandwidth. For example, the communications systems100 may employ one or more channel access methods, such as code divisionmultiple access (CDMA), time division multiple access (TDMA), frequencydivision multiple access (FDMA), orthogonal FDMA (OFDMA), single-carrierFDMA (SC-FDMA), and the like.

As shown in FIG. 1A, the communications system 100 may include wirelesstransmit/receive units (WTRUs) 102 a, 102 b, 102 c, 102 d, a radioaccess network (RAN) 104, a core network 106, a public switchedtelephone network (PSTN) 108, the Internet 110, and other networks 112,though it will be appreciated that the disclosed embodiments contemplateany number of WTRUs, base stations, networks, and/or network elements.Each of the WTRUs 102 a, 102 b, 102 c, 102 d may be any type of deviceconfigured to operate and/or communicate in a wireless environment. Byway of example, the WTRUs 102 a, 102 b, 102 c, 102 d may be configuredto transmit and/or receive wireless signals and may include userequipment (UE), a mobile station, a fixed or mobile subscriber unit, apager, a cellular telephone, a personal digital assistant (PDA), asmartphone, a laptop, a netbook, a personal computer, a wireless sensor,consumer electronics, and the like.

The communications systems 100 may also include a base station 114 a anda base station 114 b. Each of the base stations 114 a, 114 b may be anytype of device configured to wirelessly interface with at least one ofthe WTRUs 102 a, 102 b, 102 c, 102 d to facilitate access to one or morecommunication networks, such as the core network 106, the Internet 110,and/or the networks 112. By way of example, the base stations 114 a, 114b may be a base transceiver station (BTS), a Node-B, an eNode B, a HomeNode B, a Home eNode B, a site controller, an access point (AP), awireless router, and the like. While the base stations 114 a, 114 b areeach depicted as a single element, it will be appreciated that the basestations 114 a, 114 b may include any number of interconnected basestations and/or network elements.

base station 114 a may be part of the RAN 104, which may also includeother base stations and/or network elements (not shown), such as a basestation controller (BSC), a radio network controller (RNC), relay nodes,etc. The base station 114 a and/or the base station 114 b may beconfigured to transmit and/or receive wireless signals within aparticular geographic region, which may be referred to as a cell (notshown). The cell may further be divided into cell sectors. For example,the cell associated with the base station 114 a may be divided intothree sectors. Thus, in one embodiment, the base station 114 a mayinclude three transceivers, i.e., one for each sector of the cell. Inanother embodiment, the base station 114 a may employ multiple-inputmultiple output (MIMO) technology and, therefore, may utilize multipletransceivers for each sector of the cell.

The base stations 114 a, 114 b may communicate with one or more of theWTRUs 102 a, 102 b, 102 c, 102 d over an air interface 116, which may beany suitable wireless communication link (e.g., radio frequency (RF),microwave, infrared (IR), ultraviolet (UV), visible light, etc.). Theair interface 116 may be established using any suitable radio accesstechnology (RAT).

specifically, as noted above, the communications system 100 may be amultiple access system and may employ one or more channel accessschemes, such as CDMA, TDMA, FDMA, OFDMA, SC-FDMA, and the like. Forexample, the base station 114 a in the RAN 104 and the WTRUs 102 a, 102b, 102 c may implement a radio technology such as Universal MobileTelecommunications System (UMTS) Terrestrial Radio Access (UTRA), whichmay establish the air interface 116 using wideband CDMA (WCDMA). WCDMAmay include communication protocols such as High-Speed Packet Access(HSPA) and/or Evolved HSPA (HSPA+). HSPA may include High-Speed DownlinkPacket Access (HSDPA) and/or High-Speed Uplink Packet Access (HSUPA).

another embodiment, the base station 114 a and the WTRUs 102 a, 102 b,102 c may implement a radio technology such as Evolved UMTS TerrestrialRadio Access (E-UTRA), which may establish the air interface 116 usingLong Term Evolution (LTE) and/or LTE-Advanced (LTE-A).

In other embodiments, the base station 114 a and the WTRUs 102 a, 102 b,102 c may implement radio technologies such as IEEE 802.16 (i.e.,Worldwide Interoperability for Microwave Access (WiMAX)), CDMA2000,CDMA2000 1×, CDMA2000 EV-DO, Interim Standard 2000 (IS-2000), InterimStandard 95 (IS-95), Interim Standard 856 (IS-856), Global System forMobile communications (GSM), Enhanced Data rates for GSM Evolution(EDGE), GSM EDGE (GERAN), and the like.

The base station 114 b in FIG. 1A may be a wireless router, Home Node B,Home eNode B, or access point, for example, and may utilize any suitableRAT for facilitating wireless connectivity in a localized area, such asa place of business, a home, a vehicle, a campus, and the like. In oneembodiment, the base station 114 b and the WTRUs 102 c, 102 d mayimplement a radio technology such as IEEE 802.11 to establish a wirelesslocal area network (WLAN). In another embodiment, the base station 114 band the WTRUs 102 c, 102 d may implement a radio technology such as IEEE802.15 to establish a wireless personal area network (WPAN). In yetanother embodiment, the base station 114 b and the WTRUs 102 c, 102 dmay utilize a cellular-based RAT (e.g., WCDMA, CDMA2000, GSM, LTE,LTE-A, etc.) to establish a picocell or femtocell. As shown in FIG. 1A,the base station 114 b may have a direct connection to the Internet 110.Thus, the base station 114 b may not be required to access the Internet110 via the core network 106.

The RAN 104 may be in communication with the core network 106, which maybe any type of network configured to provide voice, data, applications,and/or voice over internet protocol (VoIP) services to one or more ofthe WTRUs 102 a, 102 b, 102 c, 102 d. For example, the core network 106may provide call control, billing services, mobile location-basedservices, pre-paid calling, Internet connectivity, video distribution,etc., and/or perform high-level security functions, such as userauthentication. Although not shown in FIG. 1A, it will be appreciatedthat the RAN 104 and/or the core network 106 may be in direct orindirect communication with other RANs that employ the same RAT as theRAN 104 or a different RAT. For example, in addition to being connectedto the RAN 104, which may be utilizing an E-UTRA radio technology, thecore network 106 may also be in communication with another RAN (notshown) employing a GSM radio technology.

The core network 106 may also serve as a gateway for the WTRUs 102 a,102 b, 102 c, 102 d to access the PSTN 108, the Internet 110, and/orother networks 112. The PSTN 108 may include circuit-switched telephonenetworks that provide plain old telephone service (POTS). The Internet110 may include a global system of interconnected computer networks anddevices that use common communication protocols, such as thetransmission control protocol (TCP), user datagram protocol (UDP) andthe internet protocol (IP) in the TCP/IP internet protocol suite. Thenetworks 112 may include wired or wireless communications networks ownedand/or operated by other service providers. For example, the networks112 may include another core network connected to one or more RANs,which may employ the same RAT as the RAN 104 or a different RAT.

Some or all of the WTRUs 102 a, 102 b, 102 c, 102 d in thecommunications system 100 may include multi-mode capabilities, i.e., theWTRUs 102 a, 102 b, 102 c, 102 d may include multiple transceivers forcommunicating with different wireless networks over different wirelesslinks. For example, the WTRU 102 c shown in FIG. 1A may be configured tocommunicate with the base station 114 a, which may employ acellular-based radio technology, and with the base station 114 b, whichmay employ an IEEE 802 radio technology.

FIG. 1B is a system diagram of an example WTRU 102. The WTRU 102 shownin FIG. 1B may be used in one or more disclosed embodiments for managingfeedback and/or control information and signaling in multi-carrier HSDPA(MC-HSDPA) and/or for providing channel orders such as High Speed SharedControl Channel (HS-SCCH) orders for activation and/or deactivation ofuplink closed-loop transmit diversity (UL CLTD), uplink multiple-inputmultiple-output (UL MIMO), or secondary cells that may be used tosupport carriers used in MC-HSDPA. As shown in FIG. 1B, the WTRU 102 mayinclude a processor 118, a transceiver 120, a transmit/receive element122, a speaker/microphone 124, a keypad 126, a display/touchpad 128,non-removable memory 106, removable memory 132, a power source 134, aglobal positioning system (GPS) chipset 136, and other peripherals 138.It will be appreciated that the WTRU 102 may include any sub-combinationof the foregoing elements while remaining consistent with an embodiment.

The processor 118 may be a general purpose processor, a special purposeprocessor, a conventional processor, a digital signal processor (DSP), aplurality of microprocessors, one or more microprocessors in associationwith a DSP core, a controller, a microcontroller. Application SpecificIntegrated Circuits (ASICs), Field Programmable Gate Array (FPGAs)circuits, any other type of integrated circuit (IC), a state machine,and the like. The processor 118 may perform signal coding, dataprocessing, power control, input/output processing, and/or any otherfunctionality that enables the WTRU 102 to operate in a wirelessenvironment. The processor 118 may be coupled to the transceiver 120,which may be coupled to the transmit/receive element 122. While FIG. 1Bdepicts the processor 118 and the transceiver 120 as separatecomponents, it will be appreciated that the processor 118 and thetransceiver 120 may be integrated together in an electronic package orchip.

The transmit/receive element 122 may be configured to transmit signalsto, or receive signals from, a base station (e.g., the base station 114a) over the air interface 116. For example, in one embodiment, thetransmit/receive element 122 may be an antenna configured to transmitand/or receive RF signals. In another embodiment, the transmit/receiveelement 122 may be an emitter/detector configured to transmit and/orreceive IR, UV, or visible light signals, for example. In yet anotherembodiment, the transmit/receive element 122 may be configured totransmit and receive both RF and light signals. It will be appreciatedthat the transmit/receive element 122 may be configured to transmitand/or receive any combination of wireless signals.

In addition, although the transmit/receive element 122 is depicted inFIG. 1B as a single element, the WTRU 102 may include any number oftransmit/receive elements 122. More specifically, the WTRU 102 mayemploy MIMO technology. Thus, in one embodiment, the WTRU 102 mayinclude two or more transmit/receive elements 122 (e.g., multipleantennas) for transmitting and receiving wireless signals over the airinterface 116.

The transceiver 120 may be configured to modulate the signals that areto be transmitted by the transmit/receive element 122 and to demodulatethe signals that are received by the transmit/receive element 122. Asnoted above, the WTRU 102 may have multi-mode capabilities. Thus, thetransceiver 120 may include multiple transceivers for enabling the WTRU102 to communicate via multiple RATs, such as UTRA and IEEE 802.11, forexample.

The processor 118 of the WTRU 102 may be coupled to, and may receiveuser input data from, the speaker/microphone 124, the keypad 126, and/orthe display/touchpad 128 (e.g., a liquid crystal display (LCD) displayunit or organic light-emitting diode (OLED) display unit). The processor118 may also output user data to the speaker/microphone 124, the keypad126, and/or the display/touchpad 128. In addition, the processor 118 mayaccess information from, and store data in, any type of suitable memory,such as the non-removable memory 106 and/or the removable memory 132.The non-removable memory 106 may include random-access memory (RAM),read-only memory (ROM), a hard disk, or any other type of memory storagedevice. The removable memory 132 may include a subscriber identitymodule (SIM) card, a memory stick, a secure digital (SD) memory card,and the like. In other embodiments, the processor 118 may accessinformation from, and store data in, memory that is not physicallylocated on the WTRU 102, such as on a server or a home computer (notshown).

The processor 118 may receive power from the power source 134, and maybe configured to distribute and/or control the power to the othercomponents in the WTRU 102. The power source 134 may be any suitabledevice for powering the WTRU 102. For example, the power source 134 mayinclude one or more dry cell batteries (e.g., nickel-cadmium (NiCd),nickel-zinc (NiZn), nickel metal hydride (NiMH), lithium-ion (Li-ion),etc.), solar cells, fuel cells, and the like.

The processor 118 may also be coupled to the GPS chipset 136, which maybe configured to provide location information (e.g., longitude andlatitude) regarding the current location of the WTRU 102. In additionto, or in lieu of, the information from the GPS chipset 136, the WTRU102 may receive location information over the air interface 116 from abase station (e.g., base stations 114 a, 114 b) and/or determine itslocation based on the timing of the signals being received from two ormore nearby base stations. It will be appreciated that the WTRU 102 mayacquire location information by way of any suitablelocation-determination method while remaining consistent with anembodiment.

The processor 118 may further be coupled to other peripherals 138, whichmay include one or more software and/or hardware modules that provideadditional features, functionality and/or wired or wirelessconnectivity. For example, the peripherals 138 may include anaccelerometer, an e-compass, a satellite transceiver, a digital camera(for photographs or video), a universal serial bus (USB) port, avibration device, a television transceiver, a hands free headset, aBluetooth, module, a frequency modulated (FM) radio unit, a digitalmusic player, a media player, a video game player module, an Internetbrowser, and the like.

FIG. 1C is a system diagram of the RAN 104 and the core network 106according to an embodiment. The RAN 104 and the core network 106 shownin FIG. 1C may be used in one or more embodiments disclosed herein formanaging feedback and/or control information and signaling inmulti-carrier HSDPA (MC-HSDPA) and/or for providing channel orders suchas High Speed Shared Control Channel (HS-SCCH) orders for activationand/or deactivation of uplink closed-loop transmit diversity (UL CLTD),uplink multiple-input multiple-output (UL MIMO), or secondary cells thatmay be used to support carriers used in MC-HSDPA. As noted above, theRAN 104 may employ a UTRA radio technology to communicate with the WTRUs102 a, 102 b, 102 c over the air interface 116. The RAN 104 may also bein communication with the core network 106. As shown in FIG. 1C, the RAN104 may include Node-Bs 140 a, 140 b, 140 c, which may each include oneor more transceivers for communicating with the WTRUs 102 a, 102 b, 102c over the air interface 116. The Node-Bs 140 a, 140 b, 140 c may eachbe associated with a particular cell (not shown) within the RAN 104. TheRAN 104 may also include RNCs 142 a, 142 b. It will be appreciated thatthe RAN 104 may include any number of Node-Bs and RNCs while remainingconsistent with an embodiment.

As shown in FIG. 1C, the Node-Bs 140 a, 140 b may be in communicationwith the RNC 142 a. Additionally, the Node-B 140 c may be incommunication with the RNC 142 b. The Node-Bs 140 a, 140 b, 140 c maycommunicate with the respective RNCs 142 a, 142 b via an Iub interface.The RNCs 142 a, 142 b may be in communication with one another via anIur interface. Each of the RNCs 142 a, 142 b may be configured tocontrol the respective Node-Bs 140 a, 140 b, 140 c to which it isconnected. In addition, each of the RNCs 142 a, 142 b may be configuredto carry out or support other functionality, such as outer loop powercontrol, load control, admission control, packet scheduling, handovercontrol, macrodiversity, security functions, data encryption, and thelike.

The core network 106 shown in FIG. 1C may include a media gateway (MGW)144, a mobile switching center (MSC) 146, a serving GPRS support node(SGSN) 148, and/or a b gateway GPRS support node (GGSN) 150. While eachof the foregoing elements are depicted as part of the core network 106,it will be appreciated that any one of these elements may be ownedand/or operated by an entity other than the core network operator.

The RNC 142 a in the RAN 104 may be connected to the MSC 146 in the corenetwork 106 via an IuCS interface. The MSC 146 may be connected to theMGW 144. The MSC 146 and the MGW 144 may provide the WTRUs 102 a, 102 b,102 c with access to circuit-switched networks, such as the PSTN 108, tofacilitate communications between the WTRUs 102 a, 102 b, 102 c andtraditional land-line communications devices.

The RNC 142 a in the RAN 104 may also be connected to the SGSN 148 inthe core network 106 via an IuPS interface. The SGSN 148 may beconnected to the GGSN 150. The SGSN 148 and the GGSN 150 may provide theWTRUs 102 a, 102 b, 102 c with access to packet-switched networks, suchas the Internet 110, to facilitate communications between and the WTRUs102 a, 102 b, 102 c and IP-enabled devices.

As noted above, the core network 106 may also be connected to thenetworks 112, which may include other wired or wireless networks thatare owned and/or operated by other service providers.

FIG. 1D is a system diagram of the RAN 104 and the core network 106according to an embodiment. The RAN 104 and the core network 106 shownin FIG. 1D may also be used in one or more embodiments disclosed hereinfor managing feedback and/or control information and signaling inmulti-carrier HSDPA (MC-HSDPA) and/or for providing channel orders suchas High Speed Shared Control Channel (HS-SCCH) orders for activationand/or deactivation of uplink closed-loop transmit diversity (UL CLTD),uplink multiple-input multiple-output (UL MIMO), or secondary cells thatmay be used to support carriers used in MC-HSDPA. As noted above, theRAN 104 may employ an E-UTRA radio technology to communicate with theWTRUs 102 a, 102 b, 102 c over the air interface 116. The RAN 104 mayalso be in communication with the core network 106.

The RAN 104 may include eNode-Bs 140 a, 140 b, 140 c, though it will beappreciated that the RAN 104 may include any number of eNode-Bs whileremaining consistent with an embodiment. The eNode-Bs 140 a, 140 b, 140c may each include one or more transceivers for communicating with theWTRUs 102 a, 102 b, 102 c over the air interface 116. In one embodiment,the eNode-Bs 140 a, 140 b, 140 c may implement MIMO technology. Thus,the eNode-B 140 a, for example, may use multiple antennas to transmitwireless signals to, and receive wireless signals from, the WTRU 102 a.

Each of the eNode-Bs 140 a, 140 b, 140 c may be associated with aparticular cell (not shown) and may be configured to handle radioresource management decisions, handover decisions, scheduling of usersin the uplink and/or downlink, and the like. As shown in FIG. 1D, theeNode-Bs 140 a, 140 b, 140 c may communicate with one another over an X2interface.

The core network 106 shown in FIG. 1D may include a mobility managementgateway (MME) 142, a serving gateway 144, and a packet data network(PDN) gateway 146. While each of the foregoing elements are depicted aspart of the core network 106, it will be appreciated that any one ofthese elements may be owned and/or operated by an entity other than thecore network operator.

The MME 142 may be connected to each of the eNode-Bs 142 a, 142 b, 142 cin the RAN 104 via an S1 interface and may serve as a control node. Forexample, the MME 142 may be responsible for authenticating users of theWTRUs 102 a, 102 b, 102 c, bearer activation/deactivation, selecting aparticular serving gateway during an initial attach of the WTRUs 102 a,102 b, 102 c, and the like. The MME 142 may also provide a control planefunction for switching between the RAN 104 and other RANs (not shown)that employ other radio technologies, such as GSM or WCDMA.

The serving gateway 144 may be connected to each of the eNode Bs 140 a,140 b, 140 c in the RAN 104 via the S1 interface. The serving gateway144 may generally route and forward user data packets to/from the WTRUs102 a, 102 b, 102 c. The serving gateway 144 may also perform otherfunctions, such as anchoring user planes during inter-eNode B handovers,triggering paging when downlink data is available for the WTRUs 102 a,102 b, 102 c, managing and storing contexts of the WTRUs 102 a, 102 b,102 c, and the like.

The serving gateway 144 may also be connected to the PDN gateway 146,which may provide the WTRUs 102 a, 102 b, 102 c with access topacket-switched networks, such as the Internet 110, to facilitatecommunications between the WTRUs 102 a, 102 b, 102 c and IP-enableddevices.

The core network 106 may facilitate communications with other networks.For example, the core network 106 may provide the WTRUs 102 a, 102 b,102 c with access to circuit-switched networks, such as the PSTN 108, tofacilitate communications between the WTRUs 102 a, 102 b, 102 c andtraditional land-line communications devices. For example, the corenetwork 106 may include, or may communicate with, an IP gateway (e.g.,an IP multimedia subsystem (IMS) server) that serves as an interfacebetween the core network 106 and the PSTN 108. In addition, the corenetwork 106 may provide the WTRUs 102 a, 102 b, 102 c with access to thenetworks 112, which may include other wired or wireless networks thatare owned and/or operated by other service providers.

FIG. 1E is a system diagram of the RAN 104 and the core network 106according to an embodiment. The RAN 104 and the core network 106 shownin FIG. 1E may be used in one or more embodiments disclosed herein formanaging feedback and/or control information and signaling inmulti-carrier HSDPA (MC-HSDPA) and/or for providing channel orders suchas High Speed Shared Control Channel (HS-SCCH) orders for activationand/or deactivation of uplink closed-loop transmit diversity (UL CLTD),uplink multiple-input multiple-output (UL MIMO), or secondary cells thatmay be used to support carriers used in MC-HSDPA. Additionally, the RAN104 may be an access service network (ASN) that employs IEEE 802.16radio technology to communicate with the WTRUs 102 a, 102 b, 102 c overthe air interface 116. As will be further discussed below, thecommunication links between the different functional entities of theWTRUs 102 a, 102 b, 102 c, the RAN 104, and the core network 106 may bedefined as reference points.

As shown in FIG. 1E, the RAN 104 may include base stations 140 a, 140 b,140 c, and an ASN gateway 142, though it will be appreciated that theRAN 104 may include any number of base stations and ASN gateways whileremaining consistent with an embodiment. The base stations 140 a, 140 b,140 c may each be associated with a particular cell (not shown) in theRAN 104 and may each include one or more transceivers for communicatingwith the WTRUs 102 a, 102 b, 102 c over the air interface 116. In oneembodiment, the base stations 140 a, 140 b, 140 c may implement MIMOtechnology. Thus, the base station 140 a, for example, may use multipleantennas to transmit wireless signals to, and receive wireless signalsfrom, the WTRU 102 a. The base stations 140 a, 140 b, 140 c may alsoprovide mobility management functions, such as handoff triggering,tunnel establishment, radio resource management, traffic classification,quality of service (QoS) policy enforcement, and the like. The ASNgateway 142 may serve as a traffic aggregation point and may beresponsible for paging, caching of subscriber profiles, routing to thecore network 106, and the like.

The air interface 116 between the WTRUs 102 a, 102 b, 102 c and the RAN104 may be defined as an R1 reference point that implements the IEEE802.16 specification. In addition, each of the WTRUs 102 a, 102 b, 102 cmay establish a logical interface (not shown) with the core network 106.The logical interface between the WTRUs 102 a, 102 b, 102 c and the corenetwork 106 may be defined as an R2 reference point, which may be usedfor authentication, authorization, IP host configuration management,and/or mobility management.

The communication link between each of the base stations 140 a, 140 b,140 c may be defined as an R8 reference point that includes protocolsfor facilitating WTRU handovers and the transfer of data between basestations. The communication link between the base stations 140 a, 140 b,140 c and the ASN gateway 215 may be defined as an R6 reference point.The R6 reference point may include protocols for facilitating mobilitymanagement based on mobility events associated with each of the WTRUs102 a, 102 b, 100 c.

As shown in FIG. 1E, the RAN 104 may be connected to the core network106. The communication link between the RAN 104 and the core network 106may defined as an R3 reference point that includes protocols forfacilitating data transfer and mobility management capabilities, forexample. The core network 106 may include a mobile IP home agent(MIP-HA) 144, an authentication, authorization, accounting (AAA) server146, and a gateway 148. While each of the foregoing elements aredepicted as part of the core network 106, it may be appreciated that anyone of these elements may be owned and/or operated by an entity otherthan the core network operator.

The MIP-HA may be responsible for IP address management, and may enablethe WTRUs 102 a, 102 b, 102 c to roam between different ASNs and/ordifferent core networks. The MIP-HA 144 may provide the WTRUs 102 a, 102b, 102 c with access to packet-switched networks, such as the Internet110, to facilitate communications between the WTRUs 102 a, 102 b, 102 cand IP-enabled devices. The AAA server 146 may be responsible for userauthentication and for supporting user services. The gateway 148 mayfacilitate interworking with other networks. For example, the gateway148 may provide the WTRUs 102 a, 102 b, 102 c with access tocircuit-switched networks, such as the PSTN 108, to facilitatecommunications between the WTRUs 102 a, 102 b, 102 c and traditionalland-line communications devices. In addition, the gateway 148 mayprovide the WTRUs 102 a, 102 b, 102 c with access to the networks 112,which may include other wired or wireless networks that are owned and/oroperated by other service providers.

Although not shown in FIG. 1E, it may be appreciated that the RAN 104may be connected to other ASNs and the core network 106 may be connectedto other core networks. The communication link between the RAN 104 theother ASNs may be defined as an R4 reference point, which may includeprotocols for coordinating the mobility of the WTRUs 102 a, 102 b, 102 cbetween the RAN 104 and the other ASNs. The communication link betweenthe core network 106 and the other core networks may be defined as an RSreference, which may include protocols for facilitating interworkingbetween home core networks and visited core networks.

As described above, in multi-carrier High-Speed Downlink Packet Access(MC-HSDPA, one or more of the carriers such as the downlink carriers maybe bundled or paired together to reduce signaling overhead and enablethe use of currently available HS-DPCCH formats and HS-SCCH orders.

FIG. 2 illustrates a flow diagram of an example embodiment of pairingand/or bundling carriers in MC-HSDPA. For example, as shown in FIG. 2, Mcarriers may be received at 205 and bundled or paired into N entities at210. According to an embodiment, N may be a non-zero value less than orequal to M. For example, in one embodiment, eight downlink carriers in8C-HSDPA may be bundled and/or paired together into 4 entities such thatthe uplink (UL)/downlink (DL) control signaling overhead including, forexample, the UL HS-DPCCH feedback load and DL HS-SCCH/HS-SCCH orders maybe reduced and the currently available formats such as 4C-HSDPA may bereused. Control information indicative of the bundling or pairing mayalso be generated (e.g. at 210 when bundling or pairing the carriers).After bundling or pairing the downlink carriers (e.g. as shown in FIG.2), the control information indicative of the bundling or pairing maytransmitted at 215 (e.g. to a UE, which will be described in more detailbelow). Additionally, control signaling (e.g. including the controlinformation) for each entity may be treated as if the control may be anindividual carrier such that the control signaling may be mapped toexisting control signaling designs (e.g. from previous standard releasessuch as R10).

Various methods or bundling criteria may be used to pair or bundle Mcarriers to N carriers (e.g., to implement carrier pairing or bundlinginto N entities) in MC-HSDPA as shown in FIG. 2 and described herein.For example, M DL carriers may be bundled or paired by bundling orpairing DL carriers configured within a frequency band together and/orby bundling or pairing DL carriers with a MIMO configuration (e.g. MIMOenabled) together and bundling or pairing the remaining carriers withouta MIMO configuration (e.g. MIMO disabled) together.

According to another embodiment, M DL carriers may be bundled or pairedbased on the number of Transport Blocks (TrBlks) that a UE such as theWTRUs 102 a-d discussed above may support, the total number ofserving/secondary serving HS-DSCH cells, and/or the total number ofserving/secondary serving HS-DSCH cells that MIMO may be configured touse and may be defined by, for example, a UE.

FIG. 3 illustrates a diagram of an example embodiment of 8C-HSDPA withdownlink carriers bundled or paired with one or more methods disclosedherein. For example, a UE such as the WTRUs 102 a-d may support up to 5TrBlks and may be configured with 8 serving/secondary serving HS-DSCHcells, two of which may be configured with MIMO. As shown in FIG. 3, inone embodiment, every two carriers may be bundled and/or paired togetherFor example, in one embodiment, each TrBlk in FIG. 3 may span pairedcarrier 1, 2 and 4 while two TrBlks may span the paired carrier 3configured with MIMO.

Additionally, DL carriers may be bundled or paired based on or dependingon the available HS-SCCH order bits for carrier activation/deactivation.For example, bundled or paired DL carriers may be activated/deactivatedas a group (e.g. simultaneously) by one or more HS-SCCH orders (e.g.,carrier activation/deactivation may be on per-group basis). As such,order types xodt,1, xodt,2, xodt,3=‘000’ may be used for activation anddeactivation of DTX, DRX and HS-SCCH-less operation and for HS-DSCHserving cell changes. According to an example embodiment, the available6 bits including 3 bits of order type and 3 bits of order (xord,1,xord,2, xord,3) for a specified HS-SCCH order physical channel may beused to represent 56 resulting activation/deactivation states ofsecondary carriers. In a wireless communication system such as thecommunication system 100 that may implement MC-HSDPA with M beinggreater than 5 downlink carriers, the M carriers may be paired orbundled into N entities or groups of carriers where N is a non-zerointeger less than 6 as 56<2⁶.

DL carriers may also be bundled or paired based on or depending on bitsassociated with the channel quality indictor (CQI) that may be used toschedule transmissions in the wireless communication system disclosedherein such communication system 100. In one embodiment, DL carriers maybe bundled or paired based on the number of bits available for a channelquality indicator (CQI) field as described herein. For example, in oneembodiment, if the total number for all DL carrier CQI reports may be Tand each CQI corresponding to one bundled carrier entity may be t, thenT divided by t (T/t) carriers may be bundled or paired into an entity(or a bundled carrier entity) based on the criteria described herein.

According to another embodiment, DL carriers may be bundled or pairedbased on frequencies bands associated with the DL carriers. For example,two or more DL carriers that may be in adjacent frequencies or frequencybands may be bundled or paired together based on or depending oncurrently available HS-DPCCH formats and a total number of configuredcarriers. In particular, to reuse currently available 4C-HSDPA formatsfor 8C-HSDPA, each of the configured carriers (e.g. up to 8) may bepaired every two adjacent carriers (e.g. frequency adjacent) in anascending fashion, descending fashion, or by another other suitablemethod or order. For example, if eight DL carriers may be configured andindexed as 1, 2, 3, 4, 5, 6, 7 and 8, then they may be paired as (1, 2),(3, 4), (5, 6), (7, 8). Another example of 8C-HSDPA with paired andunpaired carriers is shown in FIG. 4. FIG. 4 illustrates a diagram of anexample embodiment of 8C-HSDPA with paired and unpaired carriers. Asshown in FIG. 4, 6 DL carriers which are indexed as 1, 2, 3, 4, 5 and 6are configured and may be paired as (1, 2), (3), (4, 5), (6).

According to additional embodiments, certain types of DL carriers may bebundled and/or paired together into, for example, N entities or groupsof carriers. For example, secondary DL carriers that may be used inMC-HSDPA may be bundled or paired using one or more of the methodsdescribed herein and the primary carrier may not be bundled or paired.Alternatively, DL carriers regardless of whether such DL carriers may beprimary or secondary DL carriers may be paired or bundled together usingone or more of the methods described herein.

In other embodiments, DL carriers may be bundled or paired into Nentities or groups based on or depending on cells associated with the DLcarriers. For example, multiple cells associated with the DL carriersmay be configured in the same frequency band or a number of frequenciesbands in multi-point transmission. As such, in one embodiment, DL cellssuch as secondary cells and/or primary cells in or associated with aparticular frequency band or within a particular frequency band rangemay be bundled or pared together into N entities or groups. According toanother embodiment, DL cells may be bundled or paired based on controlinformation or control signaling associated with such DL cells. Forexample, DL cells associated with particular DL cell that may carrycommon DL control information or signaling such as HS-SCCH informationor signaling may be bundled or paired together into one or more of the Nentities or groups.

DL cells associated with a particular uplink (UL) carrier (e.g. aprimary or secondary UL carrier) may also be bundled or paired into Nentities or groups. For example, a group DL cells may receive feedbackfrom a particular UL carrier (e.g. cell or channel). Such a group of DLcells may then be bundled or paired together into one of the N entitiesor groups. In particular, according to an embodiment, several ULfeedback channels or resources may be deployed for multiple downlinkssuch that a wireless communication network may configure the UE toprovide feedback on a particular UL carrier for a set of DL cells. Sucha set of DL cells may belong to a cell group that may be bundled orpaired into one of the N entities or groups. The cell group may alsoinclude some or all the cells that may be included in a pre-defined listof DL cells (e.g. explicit definitions of groups); DL cells in aparticular frequency band; cells in DL adjacent carriers; DL cells in aparticular frequency or in a particular group of frequencies; and/or DLcells in adjacent carriers associated with a particular UL carrier (e.g.a particular primary or secondary UL carrier).

Additionally, for HARQ ACK/NACK and/or CQI reporting, the DL cells maybe grouped based on activation status of the configured cells. Forexample, in 8C-HSDPA, if 6 carriers may be activated, the 6 activatedcarriers may be bundled or paired into N entities or groups based on onone or more of the methods for bundling or pairing described herein.Thus, the pairing or bundling entity may apply to activated carriersinstead of the configured carriers in MC-HSDPA. According to exampleembodiments, the pairing or bundling of the DL carriers or cells may bekept the same regardless of a subsequent activation status change of oneor more of the DL carriers or cells. Alternatively, the pairing orbundling of the DL carriers or cells may be changed based on asubsequent activation status of the cells using one or more of thebundling or pairing methods disclosed herein. For example, if a carrierchanges from activated to deactivated, that carrier may no longer bebundled or paired. Alternatively, if a carrier changes from deactivatedto activated, that carrier may be paired or bundled with other activatedcarriers using one or more of the methods for paring or bundlingdescribed herein.

DL carriers or cells may further be bundled or paired into N entities orgroups based on one or more messages received or generated by a wirelessnetwork such as a RCC configuration message. For example, a RRCconfiguration message may indicate which particular DL carriers or cellsmay be bundled or paired together. Alternatively, the RRC configurationmay include an order of DL carriers or cells such that the DL carriersin each pairing or bundling may be chosen based on the order in whichthey appear in the RRC configuration message. Additionally, the RRCconfiguration message may provide a pre-defined or signaled value (e.g.K) that may be less than or equal to the number of DL carriers (e.g. MDL carriers) in HSDPA such that the DL carriers may be grouped into Kentities or groups using one or more of the bundling or pairing methodsdisclosed herein. Serving cells may also be numbered in an order thattheir configuration IEs appear in the RRC configuration message or maybe pre-defined such that the serving cells may be bundled or pairedbased on such an order.

The bundling or pairing methods disclosed herein for DL carriers mayalso be used for bundling or pairing feedback information associatedwith one or more DL carriers (e.g., HARQ ACK/NACK and/or CQI, CQI/PCI ifMIMO may be configured) on one UL HS-DPCCH channel even if such DLcarriers may not be physically bundled or paired.

According to an example embodiment, if a carrier or cell that may bebundled or paired (e.g. as described herein) may be configured withMIMO, then one or two HS-DSCH TrBlks (e.g., a primary HS-DSCH TrBlk anda secondary HS-DSCH TrBlk) may span over the paired or bundled DLcarrier. Alternatively, if a carrier or cell that may be bundled orpaired may not be not configured with MIMO, then one HS-DSCH TrBlk mayspan the paired or bundled carrier. According to an example embodiment,a data splitter may be used to span the bundled or paired carrier overone HS-DSCH TrBlk.

FIG. 5 illustrates an example embodiment of a data splitter 500 that maybe used to span a bundled or paired carrier over one HS-DSCH TrBlk. Asshown in FIG. 5, the data splitter 500 may split data using one or moremethods or techniques disclosed herein to enable the bundled or pairedcarrier to span one HS-DSCH TrBlk. According to one embodiment, the datasplitter 500 shown in FIG. 5 may split such data before or after CRCattachment and/or channel coding depending on, for example, the numberof HARQ-ACK allowed to detect/report at the UE receiver, the number ofTrCH processing chain at the NodeB transmitter, and the like.

In one embodiment, the data may be split (e.g. by the data splitter 500shown in FIG. 5) by dividing a TrBlk equally among a bundled or pairedcarrier. For example, if the total number of carriers bundled togethermay be K, then the size of sub-TrBlk after data splitting equally usingone TrBlk may be TBS/K when, for example, the original size of theHS-DSCH TrBlk may be TBS. By dividing a TrBlk equally among a bundled orpaired carrier, channel quality of each individual carrier with abundled or paired carrier may not be signaled (e.g. at the cost ofscheduling gain).

The data may also be split (e.g. by the data splitter 500 shown in FIG.5) by dividing a TrBlk based on UL feedback information generated by oneor more components of the wireless communication network. For example,one TrBlk may be divided or split into K sub-TrBlks based on K CQIscorresponding to K carriers of a bundled or paired carrier. To reduce ULfeedback that may be caused by the total CQIs for the bundled carrier,delta_CQIs for each bundled or paired carrier may be fed back to the eNBor NodeB from a UE. The delta_CQI that may be fed back may be presentedby less bits than a typical or regular CQI value. As described above,the data splitter shown in FIG. 5 may data split a paired carrier basedon K delta_CQI values feedback from the UE.

Additionally, a TrBlk may be divided or split into K sub-TrBlks that maybe carried on K carriers in a bundled carrier (e.g. two or more carriersbeing bundled together). When K=2, a data splitter may be a datasplitter for a paired carrier (e.g. a two carriers bundled together).

FIG. 6 depicts another example embodiment of a diagram for a datasplitter 600 for a bundled carrier or a paired carrier (e.g. a bundledcarrier that may include two carriers bundled or paired together).According to one embodiment, the data splitter 600, for example, shownin FIG. 6 may divide one TrBlk into K sub-TrBlks for K carriers in abundled carrier or paired carrier (e.g. when K=2) using a rationprovided and/or signaled from a UE or other component of the wirelesscommunication system to a eNB or NodeB rather than providing orsignaling one or more delta_CQIs. Such a ratio provided or signaledfrom, for example, a UE may further reduce UL feedback signalingoverhead.

Additionally, two HS-DSCH TrBlks (e.g. primary and secondary HS-DSCHTrBlks) may span a bundled or paired carrier (e.g. with or without aMIMO configuration) may be split or divided by any of the data splittingmethods described above. According to an example embodiment, the datasplitting ratio may or may not be the same for the two HS-DSCH TrBlks(e.g. the primary and secondary HS-DSCH TrBlks). Additionally, thenumber of HARQ processes related to two HS-DSCH TrBlks and a bundled orpaired carrier associated therewith may be 2 or 1 depending on, forexample, whether or not a UE may be configured in a MIMO mode in one ormore cells in the bundle.

In another embodiment, multiple transport blocks (TrBlk) may be carriedby one or more serving cells in a carrier bundle or pair. For example,the number of serving cells in a bundle or pair may be denoted as N. Assuch, K transport blocks may be transmitted via the bundle or pair whereK may be an integer of range 1<K≦N. According to an example embodiment,each cell may carry one TrBlk such that data associated therewith maynot be split or divided (e.g. when K=N).

The size of each Trblk may be individually determined by, for example,cell-specific CQI reports for each serving cell in a bundle or pair. Thecell-specific CQI reports may be sent, via an uplink, using for exampleTime-Division Multiplexing (TDM) or any other suitable method ortechnique including using a ‘delta’ CQI as described herein.Alternatively, the transport block size for one or more serving cells ina bundle or pair may be determined or set to an amount that may beincluded in a CQI report associated with a bundle or pair (e.g.bundle-specific CQI reports).

Each transport block may have a cyclic redundancy check (CRC) associatedtherewith. As such, a HARQ operation may be applied on each individualtransport block. When applying such a HARQ operation, the number of HARQprocesses called for may be determined by the number of transport blocksin the bundle, rather than the number of serving cells. Alternatively,joint HARQ processes may be designed for a multiple transport block sentby cells in a bundle or pair such that grouped ACK/NACK reporting inuplink control information feedback may be used.

The bundling or pairing methods or techniques described herein may beperformed when a UE may be initially configured with multiple carriersby higher layer such as at a RRC configuration. In such an embodiment,configured secondary severing cells may be dynamically activated ordeactivated via L1 signaling. Additionally, as less cells may beinvolved in a data transmission, the UE behavior may be specified whenthe activation or deactivation may occur.

In one embodiment, serving cells or carriers may be regrouped intodifferent bundling/pairing relations using one or more rules (e.g.predefined rules) such that the number bundling/pairing entities may beless thereby reducing signaling. The rules may include one or more ofthe following: cells in the same frequency band may be regrouped under acriterion that cells in the same bundle or pair may be within theadjacent frequencies as much as possible; cells associated with the sameuplink frequencies may be regrouped under a criterion that cells in thesame bundling or pair may be within the adjacent frequencies as much aspossible; and cells may be regrouped sequentially based on a sortedorder.

For example, serving cells or carriers may be labeled by consecutivenumbers at a carrier configuration via high layer signaling using a RRCconfiguration. When a deactivation order may be received with one ormore cells deactivated, the cells may be sorted according to the carrierlabels and may be regrouped sequentially according to the sorted order.For example, when 8 carriers may be configured with pairing rules {1,2}{3,4} {5,6} {7,8}, the cells may be regrouped with a new pairingrelation {13} {67} if, for example, cells 2 4 5 8 may be deactivated.

In another embodiment, the bundling/pairing relations between orcarriers may be unchanged upon deactivation of serving cells orcarriers. Additionally, when one or more cells or carriers in a bundleor pair may be deactivated, the remaining cells (e.g. the remainingactivated cells) or carriers in the bundle or pair may carry a TrBlk ofsmaller size. As the number of remaining cells (e.g. activated cells) orcarriers may be reduced, the amount of control information to supportsuch remaining cells may also be reduced. As such, a power offset on theUL and/or DL control channels may also be less or reduced.

The rules of an activation/deactivation may also be designed in such waythat the HS-SCCH order may be executed to activate/deactivate a bundleor pair. In such an embodiment, control signaling for the UL and/or DLmay reuse current HS-SCCH order and channels and may operate as if theremay be a smaller number of activated serving cells.

According to one embodiment, a UE may receive or acquire information(e.g. configuration information) associated with or that may includewhich carriers may be bundled or paired. For example, the informationmay be transmitted by a component of a wireless communication systemsuch as NodeB or eNB, for example, to a UE explicitly or implicit tosignal the bundling or pairing of a downlink carrier. The UE may receiveor acquire configuration information regarding which carriers may bebundled or paired and, thus, controlled by one HS-SCCH such that the UEmay decode the bundled or paired carriers (e.g. in the N entities) usingthe configuration information. The configuration information that mayinclude bundling or pairing information may be pre-defined based on thenumber of configured carriers or based on carriers configured by higherlayer.

The configuration information or information indicating bundled orpaired carriers may be signaled, for example, explicitly to a UE. In oneembodiment, a new IE may be introduced on a RRC control signalingmessage to explicitly signal the configuration. For example, a RNC maysend the RRC control signaling message to a UE. The UE may then extractthe configuration information of bundled or paired carriers from the RRCmessage.

In another embodiment, a L2 message, via, for example, a MAC header, maybe used to explicitly signal the configuration information of a bundledor paired carrier. For example, after receiving such a L2 signal ormessage (e.g. a semi-static message), a UE may decode a HS-SCCH andextract the control information used for data demodulation acrossmultiple carriers as described herein.

Alternatively, a L1 message may be used to explicitly signal theconfiguration of a bundled or paired carrier, for example, using aHS-SCCH order such as a HS-SCCH order proposed herein and described inmore detail below.

The configuration or information indicating bundled or paired carriersmay also be signaled, for example, implicitly to a UE. In oneembodiment, instead of introducing a new parameter or signaling message,the configuration or predefined configuration information of a bundle orpaired carrier may be signaled by an existing parameter (e.g. aSecondary_Cell_Enabled or Secondary_Cell_Activ). An example may be shownin Table 1 where a Secondary_Cell_Enabled may be equal to the number ofthe secondary serving HS-DSCH cells configured by higher layers based onthe Secondary_Cell_Enabled. The UE may implicitly signal the bundled orpaired DL carriers and may maps them to the equivalent configuration in4C-HSDPA using for, example, the parameters shown in Table 1.

TABLE 1 Carrier configuration based implicit signaling Bundling/pairingof Equivalent configuration in Secondary_Cell_Enabled DL carriers R104C-HSDPA 0 <= Secondary_Cell_Enabled <= 3 No pairing Configure(Secondary_Cell_Enabled + 1) DL carriers 4 (0, 1), (2, 3), (4) Configure3 DL carriers 5 (0, 1), (2, 3), (4, 5) Configure 3 DL carriers 6 (0, 1),(2, 3), (4, 5), (6) Configure 4 DL carriers 7 (0, 1), (2, 3), (4, 5),(6, 7) Configure 4 DL carriers

According to an example embodiment, the methods described herein (e.g.to implicitly or explicitly signal configuration information orinformation associated with a bundled or paired carrier) may be usedwhen, for example, DL carriers that may be bundled or paired may use oneHSDPA TrBlk, or UL carriers with feedback contents (e.g., HARQ ACK/NACK,CQI, CQI/PCI if MIMO configured, and the like) may be bundled or paired.When such bundled or paired DL carriers use one HSDPA TrBlk or bundledor paired UL carriers include such feedback contents, current HS-DPCCHformats may be used to support the additional carriers that may beincluded in MC-HSDPA. For example, when such bundled or paired DLcarriers use one HSDPA TrBlk or bundled or paired UL carriers includesuch feedback contents, current HS-DPCCH formats used in 4C-HSDPA may beused to support the additional carriers associated with 8C-HSDPA.

In an MC-HSDPA system with bundled or paired carriers, the UE may alsouse DL control information for an associated HS-PDSCH data demodulation.To reduce DL control signaling overhead, one HS-SCCH associated withHS-PDSCHs carried on a bundled or paired carrier may be sent on one ormore of the following: one of the carriers included in the bundled orpaired carrier, a first carrier included in the bundled or pairedcarrier, a carrier with the least amount of load included in the bundledor paired carrier, and a primary carrier if the primary carrier belongsto the bundled or paired carrier. For example, if a bundled carrierincludes K carriers, one HS-SCCH associated with HS-PDSCHs carried onthe bundled carrier may be sent on one or more of the following: one ofthe K carriers; a first carrier of the K carriers; a carrier with lessload (e.g. smaller sub-TrBlk) than others the other carriers included inthe K carriers; and a primary carrier if the primary carrier belongs tothe K carriers.

After a UE may receive a HS-SCCH carried on one of the carriers includedin a bundled or paired carrier (e.g. one of the K carriers), the UE mayapply the control information received on HS-SCCH to the datademodulation on the appropriate K carriers.

To facilitate data demodulation across K carriers, one HS-SCCH may bedesigned, implemented, and used as disclosed herein. In one embodiment,an existing HS-SCCH may be signaled and used for K sub-TrBlks carried ona bundled carrier or 2 sub-TrBlks carried on a paired carrier. The valueof 6 bits Transport-block size (TBS) information X_(tbs)=(x_(tbs,1),x_(tbs,2), . . . , x_(tbs,6)) may represent the size of one TrBlkspanning the bundled or paired carrier or the size of one sub-TrBlkcarried (X_(sub) _(_) _(tbs)) on each individual carrier of the bundledor paired carrier. The ratio between these two values may be 1/K.According to one embodiment, an existing HS-SCCH may be signaled asdescribed above when one HS-DSCH TrBlk may be equally split into Ksub-TrBlks corresponding to K carriers of a bundled carrier (or oneHS-DSCH TrBlk may be evenly split into 2 Sub-TrBlks for a pairedcarrier) such that the same channel coding, modulation and HARQ may beapplied to the evenly split sub-TrBlks due to a same or similar channelcondition.

According to another embodiment, a joint HS-SCCH format may be provided.The joint HS-SCCH may be designed or implemented based on a tradeoff ofscheduling flexibility and reducing signaling overhead. The jointHS-SCCH may be used to carry common and carrier-specific controlinformation for one TrBlk spanned across K carriers that may include acommon part and a carrier-specific part. The common part may include thecommon control information that may be shared for one or more sub-TrBlksacross K carriers while the carrier-specific part may individuallyinclude the carrier-specific control information for K carriers that maybe used for data demodulation. Also, the Joint HS-SCCHs may be designedbased on the tradeoff of scheduling flexibility and signaling overheadreduction.

One or more parameters may be included in the common part or thecarrier-specific part that may be transmitted by the joint HS-SCCHphysical channel (e.g. for K carriers configured in non-MIMO or MIMOmode). The parameters may include channelization-code-set information;modulation scheme information; hybrid-ARQ process information; aredundancy and constellation version; a data indicator; a UE identity;transport-block size information; precoding weight information (e.g. ifone transport block may be configured for MIMO mode); a number oftransport blocks information (e.g. if one transport block may beconfigured for MIMO mode); precoding weight information for a primarytransport block (e.g. if two transport blocks may be configured for MIMOmode); transport-block size information for the primary transport block(e.g. if two transport blocks may be configured for MIMO mode);transport-block size information for a secondary transport block (e.g.if two transport blocks may be configured for MIMO mode); a redundancyand constellation version for a primary transport block (e.g. if twotransport blocks are configured for MIMO mode); a redundancy andconstellation version for the secondary transport block (e.g. if twotransport blocks may be configured for MIMO mode)

According to an example embodiment, a parameter that may be included inthe common part may not be included a UE-specific part, and vice versa.Additionally, when a selecting one or more parameters for a common partand UE-specific part of a joint HS-SCCH, the common part may includecommon control information that may be shared by, for example, carriers(e.g. K carriers) such that the least carrier-specific controlinformation may be included in individual carrier-specific parts. Also,the common part may include limited common control information that maybe shared for carriers (e.g. K carriers) such that more carrier-specificcontrol information may be included in each carrier-specific part.

One or more coding chain schemes may also be used for transmissions onthe joint HS-SCCH. For example, channelization codes and modulationschemes may be used across carriers (e.g. K carriers) in, for example, abundled or paired carrier.

FIG. 7 and FIG. 8 illustrate diagrams of coding schemes that may be usedin a joint HS-SCCH for a bundled or paired carrier not configured withMIMO and configured with MIMO, respectively. As shown in FIGS. 7 and 8,a number of channelization codes (e.g. used for a TrBlk) and modulationschemes may be common across K carriers associated with a bundled orpaired carrier not configured with MIMO and configured with MIMO. Thechannelization codes used for a particular TrBlk may also be differentacross K carriers associated with a bundled or paired carrier notconfigured with MIMO and configured with MIMO.

According to another embodiment, to facilitate data demodulation for aUE across or over a bundled or paired carrier, one or more newparameters may be introduced to indicate a difference in HS-DSCH datatransmitted over carriers (e.g. K carriers). For example, a scalingfactor denoted as R_(tbs,k) may be introduced. The scaling factorR_(tbs,k) may be the size of a sub-TrBlk transmitted on the k^(th)carriers. For example, the scaling factor R_(tbs,k) may be representedby less than the 6 bits of Transport block size (TBS) information (e.g.6 bits: x_(tbspb,1), x_(tbspb,2), . . . , x_(tbspb,6)) thereby reducingthe load associated with the using a DL HS-SCCH. In one embodiment, thesize of one TrBlk across carriers (e.g. K carriers) or X_(tbs) may beincluded in the common part while the scaling factor for each carrier,R_(tbs,k) may be included in the K carrier-specific parts rather thanindividually signaling the size of sub_TrBlk (X_(sub) _(_) _(tbs,k)).

A HS-SCCH order for activation/deactivation for one or more secondarycarriers in MC-HSDPA (e.g. 4C-HSDPA, 8C-HSDPA, and the like) may be asingle HS-SCCH order that may simultaneously activate/deactivateconfigured carriers on per-carrier basis. For example, if a 6-bitHS-SCCH order may be used, then the total states that may be berepresented may be 64 (or 2⁶) taking into account a 8 HS-SCCH order usedfor other purposes such as activation and deactivation of DTX, DRX andHS-SCCH-less operation and for HS-DSCH serving cell change. As such, theavailable 6 bit HS-SCCH orders for carrier activation/deactivation maybe 56 (e.g. due to 2⁵<56≦2⁶), if the number of bundled or pairedcarriers may be less than 6 such that a single HS-SCCH order maysimultaneously activate/deactivate configured and bundled or pairedcarriers on per-group basis by reusing any per-carrier based method by,for example, replacing each carrier with one-group bundled or pairedcarriers.

According to an example embodiment, a single HS-SCCH order maysimultaneously activate/deactivate configured and bundled or pairedcarriers on a per-group basis using one or more rules. The one or morerules may include activating/deactivating configured and bundled orpaired carriers on a per-group basis such that that a 1st secondaryserving HS-DSCH cell may not be bundled with other secondary servingHS-DSCH cells (e.g. the 1st secondary serving HS-DSCH cell may bebundled with itself or treated as one group) due to the associationbetween 1st secondary serving HS-DSCH cell and the secondary uplinkfrequency when DC-HSUPA may be configured. As such, the 1st SecondaryServing HS-DSCH cell may not be deactivated due to the deactivation ofanother bundled secondary serving HS-DSCH cell when the secondary uplinkfrequency may still be activated.

The one or more rules may further include activating/deactivatingconfigured and bundled or paired carriers on a per-group basis such thata primary DL carrier (or serving HS-DSCH cell) may not be bundled withother carriers (or secondary serving HS-DSCH cells) if the primarycarrier may not be deactivated. If the primary DL carrier (or servingHS-DSCH cell) may be bundled or paired with other DL carriers (orsecondary serving HS-DSCH cells), the HS-SCCH order used toactivate/deactivate the bundled or paired carrier may be conditioned toactivate/deactivate other DL carriers rather than the primary DL carrier(e.g. secondary serving HS-DSCH cells) in the bundled or paired carrier.

The one or more rules may further include activating/deactivatingconfigured and bundled or paired carriers on a per-group basis such thata 1st secondary serving HS-DSCH cell may be bundled with a secondaryuplink frequency and activated/deactivated as a group that may use onebit (e.g. bundling or pairing information) thereby reducing the bitconsumption on a HS-SCCH order. Such bundling or pairing information(e.g. the one bit) may be signaled using a higher layer message (e.g. aRRC message).

According to an example embodiment, the carrier activation/deactivationon per-carrier basis including the one or more rules associatedtherewith may be reused for carrier activation/deactivation on per-groupbasis when an individual carrier may be replaced by a group of carrierin MC-HSDPA with a bundled or paired carrier. As a 6-bit HS-SCCH ordermay support simultaneous carrier activation/deactivation for up to 5groups on per-group basis, the secondary serving HS-DSCH cells andsecondary uplink Frequency may be bundled or paired up to 5 groups ofcarrier to be activated/deactivated.

For example, in 8C-HSDPA, to use a single HS-SCCH order tosimultaneously activate/deactivate 7 secondary serving HS-DSCH cells anda secondary uplink frequency if DC-HSUPA may be configured, 8serving/secondary serving HS-DSCH cells may be paired as (0), (1),(2,3), (4,5) and (6,7), then 4 paired/unpaired secondary serving HS-DSCHcells and secondary uplink Frequency may be simultaneouslyactivated/deactivated by a single HS-SCCH order as shown in Table 2below where (0) may indicate the serving HS-DSCH cell may not e bundledor paired with other secondary serving HS-DSCH cells. According to otherexample embodiments, the actual command-to-bit mapping and pairing ofsecondary carriers shown in Table 2 may be different in actualimplementation. For example, 8 serving and secondary serving HS-DSCHcells may be paired as (0), (1), (2), (3) and (4,5,6,7), then 4paired/unpaired secondary serving HS-DSCH cells and a secondary uplinkFrequency may be simultaneously activated/deactivated by a single 6-bitHS-SCCH order.

TABLE 2 Orders for activation and deactivation of Secondary carriers in8C-HSDPA with 5 paired/unpaired DL carriers (or 4 paired/unpaired DLsecondary serving HS-DSCH cells) Activation Status of Secondary ServingHS-DSCH cells and Secondary Uplink Frequency A = Activate; D =De-activate Order (1^(st)) (2^(nd), 3^(rd)) (4^(th), 5^(th)) (6^(th),7^(th)) Type Secondary Secondary Secondary Secondary (xodt, 1, ServingServing Serving Secondary Serving xodt, 2, Order Mapping HS-DSCH HS-DSCHHS-DSCH Uplink HS-DSCH xodt, 3) x_(ord,1) x_(ord,2) x_(ord,3) cell cellscells Frequency cells 001 0 0 0 D D D D D 0 0 1 A D D D D 0 1 1 A D D AD 0 1 0 D A D D D 1 0 0 A A D D D 1 0 1 A A D A D 1 1 0 D D A D D 1 1 1A D A D D 010 0 0 0 A D A A D 0 0 1 D A A D D 0 1 0 A A A D D 0 1 1 A AA A D 1 0 0 D D D D A 1 0 1 A D D D A 1 1 0 A D D A A 1 1 1 D A D D A011 0 0 0 A A D D A 0 0 1 A A D A A 0 1 0 D D A D A 0 1 1 A D A D A 1 00 A D A A A 1 0 1 D A A D A 1 1 0 A A A D A 1 1 1 A A A A A

If the total number of bundled (or paired) carriers in MC-HSDPA (e.g. Nbundled or paired carriers) may be less than a threshold (e.g. 5 or thecurrent total order bits), then a single HS-SCCH order including a 3 bitorder type (x_(odt,1), x_(odt,2), x_(odt,3)) and 3 bit order (x_(ord,1),x_(ord,2), x_(ord,3)) may simultaneously activate/deactivate carriers inMC-HSDPA (e.g. N bundled or paired carriers). According to an exampleembodiment, a HS-SCCH order mapping table may be introduced to defineorders for activation/deactivation of bundled or paired carriers inMC-HSDPA (e.g. N bundled or paired carriers). Alternatively, orders foractivation/deactivation of secondary carriers in 4C-HSDPA may be reusedin MC-HSDPA by mapping each group of bundled (or paired) carriers inMC-HSDPA to each individual carrier in 4C-HSDPA. For example, in8C-HSDPA. 7 secondary serving HS-DSCH cells may be bundled to threegroups that may respectively replace 1^(st), 2^(nd) and 3^(rd) secondaryserving HS-DSCH cells in a 4C-HSDPA order mapping table. An exampleimplementation of 8C-HSDPA configured with DC-HSUPA may be shown inTable 3 where a 1st secondary serving HS-DSCH cell may not be bundledwith other secondary serving HS-DSCH cells that may be associated with asecondary uplink frequency. In 8C-HSDPA configured with a single uplinkcarrier, the restriction of not bundling a 1st secondary serving HS-DSCHcell with other secondary serving HS-DSCH cells may not be used and DLsecondary carriers may be bundled/paired into 4 bundled/paired secondaryserving HS-DSCH cells that may be mapped to 4 individual carriers in4C-HSDPA as shown in Table 4 below.

TABLE 3 Example Orders for activation and deactivation of in 8C-HSDPA +DC-HSUPA with N = 4 bundled DL carriers (or 3 bundled DL secondarycarriers) Activation Status of Secondary Serving HS- DSCH cells andSecondary Uplink Frequency A = Activate; D = De-activate (4^(th), 5^(th)1^(st) (2^(nd), 3^(rd)) 6^(th), 7^(th)) Secondary Secondary SecondaryOrder Type Serving Serving Serving Secondary x_(odt,1), x_(odt,2), OrderMapping HS-DSCH HS-DSCH HS-DSCH Uplink x_(odt,3) x_(ord,1) x_(ord,2)x_(ord,3) cell cell cell Frequency 001 0 0 0 D D D D 0 0 1 A D D D 0 1 1A D D A 0 1 0 D A D D 1 0 0 A A D D 1 0 1 A A D A 1 1 0 D D A D 1 1 1 AD A D 010 0 0 0 A D A A 0 0 1 D A A D 0 1 0 A A A D 0 1 1 A A A A 1 0 0Unused (Reserved) 1 0 1 Unused (Reserved) 1 1 0 Unused (Reserved) 1 1 1Unused (Reserved)

TABLE 4 Example Orders for activation and deactivation of 4bundled/paired Secondary carriers in MC-HSDPA Activation Status ofSecondary carriers A = Activate; D = De-activate Order 1^(st) 2^(nd)3^(rd) 4^(th) Type bundled/paired bundled/paired bundled/pairedbundled/paired x_(odt,1), Secondary Secondary Secondary Secondaryx_(odt,2), Order Mapping Serving HS- Serving HS- Serving HS- Serving HS-x_(odt,3) x_(ord,1) x_(ord,2) x_(ord,3) DSCH cell DSCH cell DSCH cellDSCH cell 001 0 0 0 D D D D 0 0 1 A D D D 0 1 1 A D D A 0 1 0 D A D D 10 0 A A D D 1 0 1 A A D A 1 1 0 D D A D 1 1 1 A D A D 010 0 0 0 A D A A0 0 1 D A A D 0 1 0 A A A D 0 1 1 A A A A 1 0 0 Unused (Reserved) 1 0 1Unused (Reserved) 1 1 0 Unused (Reserved) 1 1 1 Unused (Reserved)

According to an example embodiment, the total number of carriers orbundled (or paired) carriers (e.g. N) may be greater than a thresholdsuch as a threshold L defined as └log₂ (total number of HS-SCCH ordersthat can be used for carrier activation/deactivation)┘ (or the currenttotal order bits), where the notation of └x┘ may be a function floor(x)such that x may be rounded down to the nearest integer. The threshold Lmay indicate the maximum number of carriers or bundled (or paired)carriers that may be simultaneously activated/deactivated by a singleHS-SCCH order given the total number of HS-SCCH orders that may be usedfor carrier activation/deactivation in MC-HSDPA (e.g. considering 6-bitHS-SCCH order used in 4C-HSDPA, and 8 HS-SCCH orders for other purposes,there are 56 HS-SCCH orders available for carrieractivation/deactivation such that the threshold L=└log₂ 56┘=5), toactivate/deactivate all configured secondary carriers in MC-HSDPA (e.g.,8C-HSDPA) with N bundled/paired carriers when DC-HSDPA may beconfigured, a HS-SCCH order for activation/deactivation of secondaryserving HS-DSCH cells and a secondary uplink frequency may beconfigured, provided, and implemented using one or more of the followingmethods described herein.

For example, in one embodiment, the total order bits of a HS-SCCH ordermay be extended from the current total order bits or the threshold (e.g.5) to the total number of carriers or bundled (or paired) carriers(e.g., N) in MC-HSDPA (e.g. from 6 to N (where N may be the total numberof carriers or bundled/paired carriers in MC-HSDPA)) by reinterpreting(N-current total order bits) bits from one or more available, enabledfor other purposes than carrier activation/deactivation, reserved, orunused fields of an HS-SCCH order such as transport block sizeinformation, or new data indicator when the UE is not configured withMIMO. For example, in MC-HSDPA with N=8 bundled carriers, a 6-bitHS-SCCH order that may be used in 4C-HSDPA and a threshold less than N(e.g. the threshold L may be 5 and N>L), the total order bits of anHS-SCCH order may be extended from 6 to N (e.g. 8) or (N−6) such that 2additional bits may be reinterpreted from other fields or bits such asthe 5th and 6th bits of trans port block size (TBS) when N=8. In such anembodiment, current 6-bit TBS values that may be used for other purposessuch as TBS bits may be set to 111111 for a HS-DSCH retransmission wherethe Node-B or eNB may select a combination for which no mapping mayexist between the original transport block size and the selectedcombination of channelization Code set and modulation type, or TBS bitsmay be set to 111110 for the retransmissions of HS-SCCH lesstransmissions, may be reused for a HS-SCCH order (e.g. an 8 bits HS-SCCHorder). The extended order bits may be used to activate and/ordeactivate secondary carriers along with the existing 6 order bitsincluding 3 bit order type and 3 bit order. The HS-SCCH order (e.g. the8 bits HS-SCCH order) may be transmitted or signaled along with theextended order bits.

A TFRI value (i.e. a 6 bit TBS) corresponding to HS-SCCH order withextended order bits may be used in one embodiment as described herein.According to another embodiment, a TRFI value (i.e., TBS bits) may beset to 111101 for a HS-SCCH order such that resulting in a a new UEprocedure for receiving HS-SCCH may be implemented and used as describedherein below. A UE may receive the HS-SCCH order (e.g. the 8 bitsHS-SCCH order), may process or execute the HS-SCCH order, and mayrespond to the HS-SCCH order. For example, if a UE may detect that oneof the monitored HS-SCCHs in a sub-frame n may carry consistent controlinformation intended for the UE and if a CRC of the HS-SCCH may be OK, aUE_DTX_DRX_Enabled may be TRUE or HS-SCCH_less_mode=1 orSecondary_Cell_Enabled may not 0, and the ‘channelization-code-setinformation’ and ‘modulation scheme information’ correspond to anHS-SCCH order, then the UE may transmit ACK information in the slotallocated to the HARQ-ACK in the corresponding HS-DPCCH sub-frame andprocess the HS-SCCH orders. Otherwise, the UE may discard theinformation received on the HS-SCCH.

Alternatively, the UE may maintain the same UE procedure for receiving aHS-SCCH order, but a TFRI value related to 2 bits of a TBS used for a 8bit HS-SCCH order may be defined to correspond to the 8 bit HS-SCCHorder described herein. For example, a 6-bit TBS carrying a hard-codedunique TFRI value for a 6-bit HS-SCCH order (i.e., 111101) may beredefined as two parts: one part (e.g. a first part) includes the first4 bits of TBS, denoted as x_(tbs,1), x_(tbs,2), . . . , x_(tbs,4) andmay be set to 1111; the other part (e.g. a second part) includes the5^(th) and 6^(th) bit of TBS, denoted as x_(tbs,5, tbs,6) and may be setto 2 extended order bit, which may be named as 2-bit extended order typeor extend order for 8-bit HS-SCCH order and could be any of 4 valuessuch as “00”, “01”, “10” and “11”. According to one embodiment, forbackward compatibility, two extended order bit may be set to “01” for a8-bit HS-SCCH order such that current carrier activation/deactivationmay be resused (e.g. current 4C-HSDPA carrier activation/deactivationmay be reused for 8C-HSDPA).

In another embodiment, instead of using a single HS-SCCH order, multipleHS-SCCH orders may be used for activation/deactivation of secondarycarriers in MC-HSDPA with N bundled or paired carriers.

Based on the number of carrier configurations, a plurality of tablescorresponding to 4C-HSDPA (i.e., Secondary_Cell_Enabled is less than 4)and 8C-HSDPA (i.e., Secondary_Cell_Enabled is great than 3) with bundledor paired carriers may be used. For example, when 4C-HSDPA may beconfigured, an order mapping table defining the orders for activationand deactivation of secondary serving HS-DSCH cells and a secondaryuplink frequency for 4C-HSDPA may be used, while the order mappingtables, for example, shown in Tables 3 and/or 4 may be used when8C-HSDPA with bundled or paired carriers may be configured.

Although the methods and embodiments may be described herein for carrieractivation/deactivation in MC-HSDPA with bundled or paired carriers,such methods and embodiments may also be used for carrieractivation/deactivation in MC-HSDPA (e.g., 8C-HSDPA) without bundled orpaired carriers, for example, when N=M such that no carriers in MC-HSDPAmay be bundled or paired; or when replacing a group of bundled or pairedcarriers with a single carrier, and/or when directly being used toactivate/deactivate secondary carriers in 8C-HSDPA on per-group basis(e.g. bundled or paired carriers may be treated as a group of carriersto be activated/deactivated although physically spanning one TrBlkacross bundled or paired carrier in downlink transmission may notoccur). For example, if N=M=8 such that no carriers in 8C-HSDPA arebundled or paired, the methods and embodiments described above may beused for 8C-HSDPA without bundling or pairing carriers, such as using asingle 8-bit HS-SCCH order with 2 extended order bit field tosimultaneously activate/deactivate configured secondary serving HS-DSCHcells and secondary uplink frequency that may make a transition betweentwo allowed or enabled carrier activation/deactivation states within aTTI possible, and two look-up order tables based on the number ofcarrier configuration (e.g., one table for the case whenSecondary_Cell_Enabled may be less than 4, and the other for the casethat Secondary_Cell_Enabled may be greater than 3.).

According to one embodiment, independent HS-SCCH orders (e.g. twoindependent HS-SCCH orders) may be sent to activate/deactivate one ormore of the configured secondary carriers in MC-HSDPA such as 8C-HSDPA.For example, HS-SCCH orders (e.g. two or more HS-SCCH orders) may besimultaneously sent on different carriers (or serving HS-DSCH cells),may be simultaneously sent with different channelization codes, and/ormay be simultaneously sent on different sub-frames.

If HS-SCCH orders may be sent on different carriers (or serving HS-DSCHcells) and a UE may have a primary carrier (or a serving HS-DSCH cell)active (e.g. when Secondary_Cell_Active may be 0), two HS-SCCH ordersmay not be simultaneously sent on different carriers (e.g. there may beone carrier).

To enable HS-SCCH orders to be simultaneously sent on different carriers(or serving HS-DSCH cells), activation of up to 4 secondary for a UE ina single sub-frame or transmission time interval (TTI) may be used. Forexample, two TTIs may be used to move a UE from a primary carrier activestate to a multiple carrier active state that may call for and/or usemultiple HS-SCCH orders (e.g. two HS-SCCH orders).

Additionally, to enable HS-SCCH orders to be simultaneously sent ondifferent carriers (or serving HS-DSCH cells), the wirelesscommunication network such as the communications network 100 maymaintain and provide at least 2 active carriers such that the wirelesscommunication system may able to activate/deactivate a carrierconfiguration (e.g., go between any two allowed states) in 1 TTI therebyusing multiple HS-SCCH orders (e.g. two HS-SCCH).

In an another embodiment, when the UE may be in 8C-HSDPA mode with theprimary carrier active, to transit from the primary carrier active stateto a multiple carrier active state that may call for two HS-SCCH ordersin 1 single TTI, a UE may be configured or able to receive twosequential orders before transmitting a HARQ-ACK acknowledging thereception of the two orders in a HARQ-ACK field of a first receivedHS-SCCH order with, for example, timing corresponding to the firstreceived HS-SCCH order. The HARQ-ACK may be transmitted if both ordersmay be successfully received. The UE may apply two sequential orders 12slots after the end of the HS-SCCH subframe that may deliver the firstHS-SCCH order if the UE may not be configured with multiple uplinkfrequencies (or 18 slots after the end of the HS-SCCH subframe that maydeliver the order if the UE may be configured with multiple uplinkfrequencies) and transient behavior such as a HS-DPCCH format changerelated to such a change (e.g. a change in the number of cells activateddue to reception of a HS-SCCH order for carrier activation/deactivation)may take place before applying the two sequential orders. According toan example embodiment, the behavior may be identical to the currentlyspecified UE behavior when the UE receives a single order. Additionally,a corresponding change of a HS-DPCCH channel coding scheme may beapplied by a UE at the first HS-DPCCH subframe boundary after theactivation/deactivation may be applied.

FIG. 9 and FIG. 10, respectively, illustrate example embodiments oftransmission timelines from 1 active DL carrier (e.g. a primary carrieror a serving HS-DSCH cell being active) to multiple active DL carriersby using two sequential HS-SCCH orders in 8C-HSDPA configuredrespectively with 1 and 2 UL frequencies (e.g. respectively configuredwith SC-HSUPA and DC-HSUPA). As shown in FIGS. 9 and 10, a first andsecond HS-SCCH order may be sent over two consecutive TTIs such as TTI nand TTI (n+1). As such, a UE may decode the second HS-SCCH order within,for example, 6.5 slots rather than 7.5 slots that may be used forHS-PDSCH data demodulation and decoding. According to an exampleembodiment, HS-SCCH orders may be sent over two consecutive TTs and a UEmay decode a UE may be rule may be used for orders foractivation/deactivation of, for example, 8C-HSDPA secondary carriersregardless or independent of which carrier the order may be sent ortransmitted on.

Alternatively, a complex acknowledgement process may be defined suchthat transmission of a composite HARQ-ACK acknowledging sequentialHS-SCCH orders (e.g. two sequential orders) may be independently ACKedor combined with timing corresponding to a first received HS-SCCH order.For example, in 4C-HSDPA, after a UE receives a HS-SCCH order, the UEmay transmit either ACK information or DTX in a slot allocated to aHARQ-ACK in a corresponding HS-DPCCH sub-frame.

According to one embodiment, a UE may report a composite HARQ-ACK thatmay acknowledge sequential HS-SCCH orders by one or more of the methodsdisclosed herein. For example, in one embodiment, the composite HARQ-ACK(e.g. that may be acknowledging) may be determined based on criteria(e.g. composite HARQ-ACK criteria) and in terms of two individualHARQ-ACK acknowledgments and two sequential HS-SCCH orders. The criteriamay include that at least one of the HS-SCCH orders (e.g. two sequentialHS-SCCH orders) may be successfully received, for example, by a UE. Ifat least one of the HS-SCCH orders may be successfully received, the UEmay transmit ACK information. If at least of the HS-SCCH orders may notbe successfully received, the UE may invoke Discontinuous Transmission(DTX) that may be used to derive the composite HARQ-ACK acknowledgementby taking an “OR” operation of the HARQ-ACK acknowledging the first andsecond HS-SCCH orders as shown in Table 5. The criteria may also includethat each of the HS-SCCH orders (e.g. two sequential HS-SCCH orders) maybe successfully received by, for example, the UE. If each of the HS-SCCHorders may be successfully received, the UE may transmit ACKinformation. If each of the HS-SCCH orders may not be successfullyreceived, the UE may invoke DTX that may be used to derive the compositeHARQ-ACK It by taking an “AND” operation of the HARQ-ACK acknowledging afirst and second HS-SCCH order as shown in Table 6.

TABLE 5 Example of composite HARQ-ACK codebook for two sequential HS-SCCH orders HARQ-ACK_composite HARQ-ACK₁ HARQ-ACK₂ ACK ACK ACK ACK ACKDTX ACK DTX ACK DTX DTX DTX

TABLE 6 Example of composite HARQ-ACK codebook for two sequential HS-SCCH orders HARQ-ACK_composite HARQ-ACK₁ HARQ-ACK₂ ACK ACK ACK DTX ACKDTX DTX DTX ACK DTX DTX DTX

The HARQ-ACK_composite shown in Tables 5 and 6 may be used to denote acomposite HARQ-ACK acknowledgement to be reported/transmitted by a UE.Additionally, the HARQ-ACK1 and HARQ-ACK2 shown in Tables 5 and 6 may beused to denote a composite HARQ-ACK acknowledgement to the first andsecond received HS-SCCH orders.

According to another embodiment, four (4) composite HARQ-ACKacknowledgements such as ACK/ACK, DTX/ACK, ACK/DTX and DTX/DTX may bereported (e.g. explicitly) by one or more of the following:reinterpreting HARQ-ACK codewords for a dual-stream MIMO configurationby mapping a primary and secondary stream respectively to first andsecond HS-SCCH orders; reducing a spreading factor of HARQ-ACK field by2; and introducing four codewords in a codebook that may be furtheroptimized respectively for HS-SCCH order or HS-PDSCH HARQ-ACKacknowledgement reporting. Reporting the four (4) composite HARQ-ACKacknowledgements using the foregoing may enable synchronization betweena eNB or NodeB and a UE at a cost of additional power if, for example, aparticular HARQ-ACK detection performance may be desired to bemaintained due to an increase of a codebook size from 2 to 4.

In one embodiment, a single active carrier may be applied to, forexample, 8C-HSDPA and to enable dual HS-SCCH orders (e.g. dualsequential HS-SCCH orders) as described herein. For example, when a UEmay be configured in an 8C-HSDPA mode of operation, the UE may receivedual orders for carrier activation or deactivation. As such, a UEreceiving a carrier activation/deactivation order may expect to receiveanother subsequent (or second) order that may include the additionalactivation/deactivation information. The UE may then ACK the initialorder if both orders may be received correctly. If the first order wasnot a carrier activation/deactivation order, then the UE may process thefirst order and may ACK or DTX the first order based on the receptionthereof.

UL CLTD/MIMO may also be activated and/or deactivated by one or morecomponents or multiple antennas in a UE of a wireless communicationsystem such as the communication system 100. According to oneembodiment, a UL CLTD/MIMO operation may be enabled/disabled (oractivated/deactivated) via a higher layers signaling message. Forexample, an IE may be introduced on a RRC control signaling message. ARNC may transmit or send the RRC control signaling message that mayinclude the IE to a UE. The UE may then extract the UL CLTD/MIMO modeconfiguration information from the RRC message that may include the IE.

Additionally, a parameter such as “Status of UL CLTD (or MIMO orCLTD/MIMO) configuration” that may be signaled to the physical layer inthe UE and the Node B from higher layers (e.g. a RRC message) may beprovided and used. The parameter “Status of UL CLTD (or MIMO orCLTD/MIMO) configuration” may be a binary value equal to 0 or 1,respectively, that may indicate disable or enable UL CLTD (or MIMO orCLTD/MIMO) mode or may indicate deactivation or activation of UL CLTD(or MIMO or CLTD/MIMO).

UL CLTD/MIMO may also be activated/deactivated by a L1 HS-SCCH order. Toactivate/deactivate UL CLTD/MIMO using a L1 HS-SCCH order, a bit of theL1 HS-SCCH order may be used to activate/deactivate UL CLTD. The bit ofthe L1 HS-SCCH order that may be used may be a binary value equal to 1or 0, respectively, that may indicate to activate or deactivate UL CLTD.When a UE may be configured with UL MIMO, the bit of the L1 HS-SCCHorder may be used to activate/deactivate transmit diversity (and revertback to a 1 transmit antenna operation) and may be usedactivate/deactivate both UL CLTD and UL MIMO together.

According to an example embodiment, when the bit of the L1 HS-SSCH ordermay be 1, UL transmit diversity (and UL CLTD and MIMO) may be activated.Additionally, when the bit of the L1 HS-SCCH order may be 1, either ULCLTD or UL MIMO may be activated (e.g. implicitly) based on the numberof streams scheduled or configured. When a single stream or dual streamsmay be scheduled or configured, UL CLTD or UL MIMO may be activatedrespectively. In another embodiment, when the bit may be equal to 0, ULtransmit diversity (and e.g. both UL CLTD and MIMO) may be deactivated,for example, if the UE may be in either UL CLTD or UL MIMO mode.

According to another embodiment, to activate/deactivate UL CLTD/MIMOusing a L1 HS-SCCH order, 2 bits of the L1 HS-SCCH order. For example, afirst bit may be used to control UL CLTD activation/deactivation (orcontrol activation/deactivation of a first or primary stream when a UEmay be configured in UL MIMO mode), and a second bit (or the remainingbit) may be used to control activation/deactivation of a second streamwhen UE may be configured in UL MIMO mode.

To implement a HS-SCCH order for activation/deactivation of UL CLTD/MIMOin 8C-HSDPA, currently available HS-SCCH order mapping tables may bereused or reinterpreted in 8C-HSDPA, for example, with carrier reductionin activation/deactivation via bundled or paired carriers. Additionally,the availability of bits such as a bit or two (2) bits or the type ofbits may be determined from an order type and/or an order toactivate/deactivate UL CLTD/MIMO. For example, a bit may be determinedalong with the availability thereof. In one embodiment, the bit may be amost significant bit (MSB) of an order type that may be defined asfollows: UL CLTD/MIMO activation (1 bit) where x_(odt,1)=x_(UL) _(_)_(CLTD/MIMO,1); if x_(UL) _(_) _(CLTD/MIMO,1)=‘0’, the HS-SCCH order maybe a UL CLTD/MIMO deactivation order; and if x_(UL) _(_)_(CLTD/MIMO,1)=‘1’, then the HS-SCCH order may be a UL CLTD/MIMOActivation order. According to another embodiment, the bit may be a LSBof an order when an order type (x_(odt,1), x_(odt,2), x_(odt,3))=‘010’that may be defined as follows: UL CLTD/MIMO activation (1 bit) where,x_(ord,3)=x_(UL) _(_) _(CLTD/MIMO,1); if x_(UL) _(_) _(CLTD/MIMO,1)=‘0’,the HS-SCCH order may be a UL CLTD/MIMO deactivation order; and ifx_(UL) _(_) _(CLTD/MIMO,1)=‘1’, the HS-SCCH order may be a UL CLTD/MIMOactivation order.

An availability of two (2) bits that may be used to activate/deactivateUL CLTD/MIMO may also be determined. The two (2) bits may be the lasttwo bits of an order (x_(ord,2), x_(ord,3)) when an order type may be(x_(odt,1), x_(odt,2), x_(odt,3))=‘010’. For example, Unused (Reserved)commands (e.g. and the two bits associated therewith) shown in Tables 3and 4 above may be used for activation/deactivation of UL CLTD/MIMO.

According to another embodiment, to implement a HS-SCCH order foractivation/deactivation of UL CLTD/MIMO and/or activation/deactivationof a secondary carrier in 8C-HSDPA, HS-SCCH order signaling capabilitiesmay be increased by extending order bits to a higher value (e.g.increasing the currently available 6 bits to, for example, 7 or 8 bits).In such an embodiment, a 1 or 2 bit method of activation/deactivation ofUL CLTD may be treated as activation/deactivation of additional 1 or 2secondary carriers respectively, and, thus, methods used foractivation/deactivation of MC-HSDPA may be reused by increasing M by 2.

UE antenna operations may also be controlled via one or more HS-SCCHorders. For example, in addition to activation/deactivation of UL CLTDand/or UL MIMO operations, antenna operations at the UE may also becontrolled. Table 8 includes example UL CLTD antenna configurations at aUE that may be controlled via one or more HS-SCCH orders.

TABLE 7A Example UL CLTD Antenna Configurations Conventional channels(DPCCH, E-DPCCH, E- DPDCH, DPDCH, HS- Configuration # DPCCH) S-DPCCH 1Primary precoding vector Secondary precoding vector 2 Physical Antenna 1Physical Antenna 2 3 Physical Antenna 2 Physical Antenna 1 4 PhysicalAntenna 1 De-activated 5 Physical Antenna 2 De-activated

According to an example embodiment, activation and/or deactivation ofdual stream UL MIMO operations may also be used along with theconfigurations shown in Table 7A. For example, dual stream MIMOoperations may be applicable to configurations 1, 2, or 3 shown in FIG.7.

Additionally, configurations such as configurations 1-5 or a subset ofconfigurations shown in Table 7A may also be used or applicable in, forexample, single-stream MIMO operations and/or dual stream MIMOoperations. For example, for UL CLTD or a single-stream MIMO, a subsetof the configurations such as configurations 1, 4, or 5 shown in Table7A may be used. Additionally, for UL CLTD or a single-stream MIMO, asubset of the configurations such as configurations 1, 4, 2, or 3 shownin Table 7A may be used. Also, for UL CLTD or a single-stream MIMO, asubset of the configuration such as configurations 1 and 4 shown inTable 7A may be used. In one embodiment, when UL MIMO may be configuredor enabled, configurations 1, 2, or 3 shown in Table 7A may be used incombination with an uplink MIMO.

Disclosed herein are also systems and/or methods for receiving anddecoding HS-SCCH order bit(s) and systems and methods for mappingconfigurations, for example, at a UE are described. According to anexample embodiment, an order bit x may be provided that may be definedas a HS-SCCH order bit (e.g., a bit that may be carried on the HS-SCCHorder). The UE may be configured to receive such an order bit x viahigher layer signaling.

In one embodiment, a single bit or order may be used per configuration.For example, a UE antenna configuration based HS-SCCH order forcontrolling of UE antenna operations (e.g. for UL CLTD/MIMO) may beprovide using a single bit. According to an example embodiment, aHS-SCCH order bit mapping may be such that each configuration (e.g. asubset of the entries in Table 7A) that may be used may be assigned oneorder bit. In such an embodiment, a single bit of the used configurationbits may be set at a time. Such particular restriction may addrobustness to the HS-SCCH order message and also improve reliability.

In another example embodiment, each of the 5 configurations shown inTable 7A may be used and five (5) bits may be used to enable a specificconfiguration. Such a mapping may be implemented, for example, usingcurrently available 6-bit order mapping tables by setting x_(odt,1) to 1and mapping remaining order bits (5 bits—x_(odt,2); x_(odt,3);x_(ord,1); x_(ord,2); x_(ord,3)) to the 5 configurations shown in, forexample, Table 7A. A mapping may assign a pre-defined or specified orderby setting x_(odt,1) to 0. Additionally, single bit to configurationmapping may be implemented in an 8-bit order mapping table by choosing 5of the 8 order bits. The 5 five selected order bits may be mapped to the5 configurations shown in Table 7A in a pre-defined or specified order.

According to another embodiment, an additional bit for activation of ULMIMO may be used. For example, 6 bits may be used to signal combinationsof configurations that may be used by a UE to enable UL CLTD/UL MIMO,various control and data channels, various streams or carriers, and thelike (e.g., 5 bits—one for each configuration, and sixth bit (additionalbit) for activation/deactivation of UL MIMO). In one embodiment, asubset of the combinations of bits may not be allowed, enabled, and usedby a UE. For example, UL MIMO may not be allowed to be activated when aUE may be configured without S-DPCCH activated (e.g., configurations 4and/or 5 shown in Table 7A).

The additional bit that may be used for activation of UL MIMO may beimplemented in an 8-bit order mapping table. For example, a 8-bit ordermapping may be implemented by setting 2 bits of TBS, for example the 5thand 6th TBS bits (x_(tbs,5), x_(tbs,6)) to a predefined value that maybe different from values that may already be used for other purposessuch as (x_(tbs,5), x_(tbs,6))=‘01’ that may be used (e.g. already used)to indicate a HS-SCCH order for activation/deactivation of DTX, DRX,HS-SCCH-less operations and for HS-DSCH serving cell changes and anorder for activation and deactivation of secondary serving HS-DSCH cellsand secondary uplink Frequency. As such (x_(tbs,5), x_(tbs,6)) may beset to another value such as ‘00’, ‘10’ or ‘11’ to indicate the orderfor controlling the antenna operations for UL CLTD and/or UL MIMO.

In another example embodiment, activation and/or deactivation of eachallowed configuration (e.g., a subset of the configurations shown inTable 7A) may be controlled by a unique HS-SCCH order that may not beused for other purposes such as activation/deactivation of DTX, DRX,HS-SCCH-less operations and for HS-DSCH serving cell changes and anorder for activation and deactivation of secondary serving HS-DSCH cellsand secondary uplink frequency. The unique HS-SCCH order may beimplemented in either a 6-bit or 8-bit order mapping table. For example,using one order per configuration (or state), the total number ofrequired orders may be twice the number of the allowed or useableconfigurations if the activation and/or deactivation of a configurationmay be implemented using two different orders. Alternatively, the totalnumber of orders may be the same as the number of the allowed or useableconfigurations if the activation and/or deactivation of a configurationuses one toggled (e.g., two states) order. According to one embodiment,there may be 44 (64 possible minus 12 used and minus 8 reserved) unusedorders a 6-bit order mapping table, and there may be 56 (256 possibleminus 192 used and minus 8 reserved) unused orders in a 8-bit ordermapping table. Thus, a single order per configuration may be choosesfrom such available unused orders. According to additional embodiment,other approaches may also be used, which will be described below.

The configurations may also be mapped to UE states such that control ofUE antennas as well as activation and/or deactivation of UL CLTD/UL MIMOoperations may be based on a state (e.g. a current state) of a UE. TheUE may receive an indication of a state (or configuration) to operate infrom an eNB or NodeB, may determine the configuration based on andassociated with the indication, and may apply the state (orconfiguration). For example, state-based HS-SCCH order mapping forcontrolling (e.g. activation/deactivation) of UL CLTD and/or MIMO (orswitching UL CLTD activation states) may be provided a HS-SCCH ordersuch that a number of bits may be signaled to represent a state. Inparticular, if the total number of states (or configurations) may K(e.g. where K may be an integer), the states (or configurations) may berepresented by ┌log₂K┐ (e.g. ceiling(log₂(K)) or round log₂(K) up to thenearest integer) bits. HS-SCCH order bits may then be used to transmitan indication of a state to a UE. For example, order bits (x_(ord,1),x_(ord,2), x_(ord,3)) or order type (x_(odt,1), x_(odt,2), x_(odt,3)) ina 6-bit or 8-bit order mapping table may be used to indicate a state toa UE. Extended order bits from TBS field (x_(tbs,5), x_(tbs,6)) in 8-bitorder mapping table may also be used to transmit and indicate a state toa UE. The mapping between order bits and states may be in a predefinedor specified order according to one embodiment.

The UE may be configured to receive a HS-SCCH order where thecombinations of the order bits indicate a particular UE antennaconfiguration/state. For example, configurations 1, 4, and/or 5 shown inTable 7A may be encoded using two order bits as shown in Table 8. Thetwo order bits may be mapped to a configuration used to indicate theparticular UE antenna configuration/state. In addition to the mappingsshown in Table 8, the mappings in Tables 9-10 shown below may also beused to indicate a state or configuration.

TABLE 8 Example state-based order mapping Order bit 1 Order bit 2Configuration (e.g., Table 7A) 0 0 4 (UL CLTD deactivated - primaryantenna used) 0 1 5 (UL CLTD deactivated - secondary antenna used) 1 0 1(UL CLTD activated, UL MIMO deactivated) 1 1 Reserved

The mappings (e.g. shown in Tables 8-10) may also be interpreted ashaving one bit to enable UL CLTD operations (e.g., order bit 1) andanother bit to indicate which antenna to use when UL CLTD may not beactivated (e.g., order bit 2).

According to another example embodiment, the 4th entry in, for example,a mapping table may be used to activate UL MIMO operations. As shown inTable 9, such a configuration or state (e.g. activating UL MIMOoperations) may be implemented using two bits such as ‘11.’

TABLE 9 Example state-based order mapping with UL MIMO Order Order bit 1bit 2 Configuration (e.g., Table 7A) 0 0 4 (UL CLTD deactivated -primary antenna is used) 0 1 5 (UL CLTD deactivated - secondary antennais used) 1 0 1 (UL CLTD activated, UL MIMO deactivated) 1 1 UL MIMOactivated.

UL MIMO operations may be a superset of UL CLTD operations, for example,when UL MIMO may be activated and a UE may transmit one or two streams.Additionally, UL CLTD may become a fall back mode of UL MIMO operationswhen a single stream may be supported by the channel.

To provide two HS-SCCH order bits to implement the control signallingfor CLTD and/or MIMO in the existing HS-SCCH order frame, an unusedHS-SCCH order type/order bit combination may be used. For example, anorder type x_(odt,1), x_(odt,2), x_(odt,3)=‘011’ may be unused. Such anorder type x_(odt,1), x_(odt,2), x_(odt,3)=‘011’ may be used incombination with two of, for example, three available order bits suchthat when a UE decodes order type ‘011’, the information carried on theassociated order bits may be mapped according to Table 8 or Table 9, forexample.

Another example of 5 configurations for controlling/switching UL CLTDactivation states in Table 7A may be implemented by 3 HS-SCCH order bits(x_(ord,1), x_(ord,2), x_(ord,3)) combined with an unused HS-SCCH ordertype x_(odt,1), x_(odt,2), x_(odt,3)=‘011’. Table 7B illustrates anexample embodiment of 5 orders in a 6-bit order mapping table that maybe used by, for example, a UE or other component of a wirelesscommunication system such as the communication system 100 to control orswitch the UE between UL CLTD states. According to an exampleembodiment, the UE may receive the order type and order mapping (ororder bits) carried on the HS-SCCH order, may compare the received ordertype and order mapping with order types and order mappings in a mappingtable, and may access any of the UL CLTD activation states in themapping table where the received order type and order mapping (or orderbits) matches one of the order types and order mappings (or order bits)in the mapping table.

TABLE 7B Orders for UE when UL CLTD may be configured Activation StatusA = Activate; D = De-activate Single Single Tx on Tx on Single SingleAntenna 1 Antenna Tx on Tx on Order with S- 2 with S- Antenna AntennaOrder Type Mapping/ DPCCH DPCCH 1 with 2 with x_(odt,1), x_(odt,2), Biton on no S- no S- x_(odt,3) x_(ord,1) x_(ord,2) x_(ord,3) CLTD Antenna 2Antenna 1 DPCCH DPCCH 011 1 1 1 A D D D D 1 0 1 D A D D D 1 1 0 D D A DD 0 0 1 D D D A D 0 1 0 D D D D A 0 0 0 Unused (Reserved) 0 1 1 Unused(Reserved) 1 0 0 Unused (Reserved)

The currently unused combinations with order type ‘010’ may also be usedto provide two HS-SCCH order bits to implement the control signallingfor CLTD and/or MIMO in the existing HS-SCCH order frame. In such anembodiment, when the UE decodes order type x_(odt,1), x_(odt,2),x_(odt,3)=‘010’ with x_(ord,1)=1, then the two other order bitsx_(ord,2) and x_(ord,3) may be mapped according to order bit 1 and orderbit 2 shown in Table 8 or Table 9.

In another example embodiment, one order bit may be used to signalactivation and deactivation of UL CLTD. Additionally, an actualconfiguration may be signalled using a different subset of bits in astate-based approach. For example, order bit 1 may be a UL CLTDoperations activation bit such that UL CLTD may be activated when orderbit 1 may be set to 1 and deactivated otherwise (e.g. if order bit 1 maybe set to 0, a UE may be configured with configuration 4 such that ULCLTD may be deactivated altogether. In such an embodiment, order bit 2and order bit 3 may be unused and reserved.

TABLE 10 Example Mapping with a UL CLTD Activation Bit OrderConfiguration (e.g., Table bit 2 (e.g., x_(ord,2)) Order bit 3 (e.g.,x_(ord,3)) 7A) 0 0 1 0 1 2 1 0 3 1 1 4

Separate bits for UL CLTD, antenna selection, S-DPCCH activation, and/orUL MIMO may be signaled and used to indicate one or more configurations.For example, the UE may be configured to receive up to 4 order bits. Onebit of the four order bits may be used to signal each aspect of thecontrol. For example, order bit 1 may be a UL CLTD bit and may controlUL CLTD activation/deactivation, order bit 2 may be an antenna bit thatmay control on which antenna the legacy channels may transmitted (e.g.,when UL CLTD is deactivated), order bit 3 may be an S-DPCCH bit and maycontrol the activation/deactivation of S-DPCCH, order bit 4 may be a ULMIMO bit and may control UL MIMO operations, and the like.

In one embodiment, one or more restrictions or restricted states of theorder bit combinations may be provided or implemented such that ordersthat indicate restricted configurations may be ignored or prohibited(e.g. by a UE). For example, the UE may consider an antenna bit (orderbit 2) and S-DPCCH bit (order bit 3) if (or on the condition that) ULCLTD may be deactivated (e.g. order bit 1 may be set to 0).Additionally, a UL MIMO bit may be set to 0 when UL CLTD may bedeactivated and the UL MIMO bit may be set to 1 when UL CLTD may beactivated such that the UE may ignore the restricted states of the ULCLTD.

Downlink signaling may also be used to specify and/or control a UEprecoding table, for example, via HS-SCCH order signaling. To reduce thenumber of HS-SCCH orders used for configuration signaling, amultiple-codebook scheme for downlink signaling where each codebook maycorrespond to a class of antenna operations may be provided and usedherein.

FIG. 11 illustrates an example embodiment of a multiple-codebook schemethat may be used for downlink signaling and, thus, specifying and/orcontrolling a UE precoding table. As shown in FIG. 11, each class ofcodebook may operate at different codeword update rates. When codebookswitching occurs, for example, when a switch may be signaled via anHS-SCCH order, a power offset may be applied to a primary DPCCH beforeapplying the new codebook for the upcoming uplink transmission.

Codebooks included in the multiple-codebook scheme may be switched tocontrol the downlink signaling. In one embodiment, switching betweendifferent codebooks may be controlled by HS-SCCH order(s).

FIG. 12 illustrates an example embodiment of a dual-codebook switchingscheme that may be used herein. As shown in FIG. 12, a phase-onlycodebook may be used to support a normal CLTD operation and an antennaswitching codebook may be used to support antenna switching operation.The antenna switching codebook may include, for example, two or fourcode words. For an antenna switching operation, if configurations 2 and3 may be supported but other configuration may not, the antennaswitching codebook may include two code words. In another example, ifconfigurations 2, 3, 4, and 5 may be supported, the antenna switchingcodebook may include four code words. For example, the four code wordsmay be defined as

$\begin{bmatrix}1 & 0 \\0 & 1\end{bmatrix},\begin{bmatrix}0 & 1 \\1 & 0\end{bmatrix},\begin{bmatrix}1 & 0 \\0 & 0\end{bmatrix},{\begin{bmatrix}0 & 0 \\1 & 0\end{bmatrix}.}$

The antenna switching codebook may also operate at a lower codewordupdate rate than the phase-only codebook. Such an embodiment may beimplemented with and using two HS-SCCH orders.

According to another embodiment, a three-codebook switching scheme maybe implemented and used. FIG. 13 illustrates an example embodiment of athree-codebook switching scheme that may be used herein. As shown inFIG. 13, a phase-only codebook, for example, may used for normal CLTDoperation. Additionally, two antenna switching codebooks may be usedwhere one of the antenna switching codebooks may be for transmission ofS-DPCCH (e.g., configurations 2 and 3) and the other antenna switchingcodebook may be for transmissions without S-DPCCH (e.g., configurations4 and 5 described herein). In both antenna switching codebooks, twocodewords may be provided in each codebook.

After a UE receives an HS-SCCH order instructing the UE to switch acodebook (e.g. as shown in FIGS. 12 and 13), the codebook switchingoperation may be applied by the UE at the earliest E-DCH TTI boundarycoinciding with or following the beginning of the HS-DPCCH subframecontaining the HARQ-ACK corresponding to the order. The preceding weightto be applied may be indicated by the downlink F-PCICH or DPCCH inresponse thereto. A power offset with respect to current DPCCH transmitpower may also be applied to the upcoming UL DPCCH transmission, forexample when a new codebook may be applied for a first time. The UE mayalso start to follow a new PCI update rate/cycle.

In another example embodiment, an order mapping table foractivation/deactivation of secondary carriers may be defined for8C-HSDPA. For example, in 8C-HSDPA a single order may be provided withan extended order bit field that may be used for activation/deactivationof secondary carriers. The following equations may be used to providesuch a single order with an extended order bit field. For example, for4C-HSDPA:

V=(D ₂ +U ₂)+3D ₃+6D ₄+(1−D ₄)(D ₃ +D ₂ U ₂ −D ₃ U ₂ −D ₃ U ₂)(−1+D ₂ +U₂)

x _(ord)=(x _(odt,1) ,x _(odt,2) ,x _(odt,3) ,x _(ord,1) ,x _(ord,2) ,x_(ord,3))=dec2bin(V+8).

The following equations may also be applied and used to make 8C-HSDPAbackward compatible with 4C-HSDPA:

X=V+12D ₅+24D ₆+48D ₇+96D ₈

x _(ord)=(x _(tbs,5) ,x _(tbs,6) ,x _(odt,1) ,x _(odt,2) ,x _(odt,3) ,x_(ord,1) ,x _(ord,2) ,x _(ord,3))=dec2bin(mod(X+72,192).

where D_(k) and U_(k) may represent the desired activation status ofdownlink and uplink carrier k, where 1 may represent activated and 0 mayrepresent not activated.

Additional example order mapping table formats and equations for carrieractivation/deactivation in 8C-HSDPA may be defined. For example, for6-bit HS-SCCH order for 4C-HSDPA, TBS bits (6 bits) may be set to‘111101,’ which may be translated to 8-bit HS-SCCH order as ‘01xxxxxx.’Backwards compatibility with 4C-HSDPA orders in the 8-bit order mappingtable with the extended bit field (x_(tbs,5), x_(tbs,6))=‘01’ may alsobe maintained, for example, by applying the following equation:

x _(ord)=(x _(tbs,5) ,x _(tbs,6) ,x _(odt,1) ,x _(odt,2) ,x _(odt,3) ,x_(ord,1) ,x _(ord,2) ,x _(ord,3))=dec2bin(mod(X+72,192).

For example, it may be determined by

X+72=(V+8)+64=(V+8)+2⁶

where 2⁶ indicates (x_(tbs,5), x_(tbs,6))=‘01.’ In order to start(x_(tbs,5), x_(tbs,6)) from ‘00’ in the 8-bit order mapping table, thenew equation may be proposed for 8C-HSDPA as follows:

x _(ord)=(x _(tbs,5) ,x _(tbs,6) ,x _(odt,1) ,x _(odt,2) ,x _(odt,3) ,x_(ord,1) ,x _(ord,2) ,x _(ord,3))=dec2bin(mod(x+8,192).

In an example embodiment, where one order per configuration (or state)may be used, an 8-bit order mapping table may be defined and provided asdescribed herein and above. The order mapping table may optionally bedefined for activation/deactivation of UL CLTD/MIMO, rather than alsoaddressing secondary carriers for 8C-HSDPA. As described above, thetotal number of HS-SCCH orders may be twice the number of the allowedconfigurations if the activation and deactivation of one configurationmay be implemented using two different orders. Additionally, the totalnumber of HS-SCCH orders may be the same as the number of allowedconfigurations if the activation and deactivation of one configurationmay be signaled by a single order (e.g., the order toggles betweenactive/de-active). Currently, there may be 44 (64 possible minus 12 usedand minus 8 reserved) unused orders in 6-bit order mapping table, andthere may be 56 (256 possible minus 192 used and minus 8 reserved)unused orders in 8-bit order mapping table as described above. As such,providing one order per configuration or state approach may be appliedto both a 6-bit table and 8-bit table by selecting the number of ordersfrom unused orders. In other examples, mappings may be defined asdescribed above.

In an 8-bit order mapping table, equations for activation/deactivationof UL CLTD/MIMO may also be provided. For example, MIMO/CLTDdeactivation and MIMO/CLTD activation may be provided and used (e.g. assuch equations) to represent the desired activation status of UL CLTDwhere 1 may represent activated and 0 may represent not activated.

Order mapping tables may also be defined for activation/deactivation ofUL CLTD/MIMO and secondary carriers for 8C-HSDPA. Examples of allocatingHS-SCCH orders for activation/deactivation of UL CLTD/MIMO and ofsecondary carriers for 8C-HSDPA in 8-bit order mapping table may bedefined as follows.

For example, HS-SCCH orders may be allocated in the order provided by4C-HSDPA (e.g., starting the 5th and 6th bit of TBS=‘01’) and 8C-HSDPAfollowed by UL CLTD/MIMO from top to bottom in the 8-bit order mappingtable such that the order for activation/deactivation of UL CLTD/MIMOmay be implemented in 8-bit order mapping table.

HS-SCCH orders may also be allocated in the order provided by 4C-HSDPA(e.g., starting the 5th and 6th bit of TBS=‘01’) and UL CLTD/MIMOfollowed by 8C-HSDPA from top to bottom in the 8-bit order mapping tablesuch that the order for activation/deactivation of UL CLTD/MIMO may beimplemented in 6-bit order mapping table.

HS-SCCH orders may further be allocated in the order provided by8C-HSDPA including 4C-HSDPA (e.g., starting the 5th and 6th bit ofTBS=‘00’) and followed by UL CLTD/MIMO from top to bottom in the 8-bitorder mapping table such that the order for activation/deactivation ofUL CLTD/MIMO may be implemented in 8-bit order mapping table.

Additionally, HS-SCCH orders may be allocated in the order provided byUL CLTD/MIMO (e.g., starting the 5th and 6th bit of TBS=‘00’) and8C-HSDPA including 4C-HSDPA (e.g., starting the 5th and 6th bit ofTBS=‘01’) from top to bottom in the 8-bit order mapping table.

According to an example embodiment, to support the same data rate inMC-HSDPA with a bundled or paired carrier and MC-HSDPA without a bundledor paired carrier, UE categories may be provided and introduced that mayindicate that a UE may be capable of supporting the same data ratesregardless of bundling or pairing. Such UE categories may be signaled(e.g. to a UE) through one or more bits that may be included in a RRCmessage. As such, CQI tables may be provided and introduced to supportbigger TBS across multiple carriers resulting from such UE categoriesand the bits associated therewith.

Furthermore, since a TrBlk may span K carriers, feedback informationsuch as HARQ-ACK and CQI may be reduced to 1 for K carriers without MIMObeing configured and 2 for K carriers with MIMO being configured.However, the UE may still be able to measure and report K CQI valuescorresponding to K carriers to facilitate flexible HARQ scheduling atNodeB. In order to reduce the UL feedback and CQI load, K CQIs may bereported as the methods described herein: For example, for each bundledor paired carrier, 1 base CQI with higher granularity and K delta_CQIscorresponding to K carriers with lower granularity may be reported.

According to another embodiment, an E-TFC (e.g. an enhanced dedicatedchannel transport format combination (E-TFC)) or TFC (e.g. a transportformat combination) restriction may be used and provided such that theE-TFC or TFC restriction may define an estimated HS-DPCCH transmit ortransmission based on activation status of secondary serving cells (e.g.HS-DSCH cells) that may be provided in a HS-SCCH order or based on a RRCconfiguration as described above. Embodiments for cell activation statusbased HS-DPCCH transmit power (P_(HS-DPCCH)) and for transport formatcombination (TFC) selection in a UE for MC-HSDPA may be described hereinhereafter.

For example, to maximize coverage, a UE may limit use of transportformat combinations if may estimate that a certain TFC and E-TFC may usemore power than a maximum transmit power. During such a procedure, theUE may estimate a HS-DPCCH transmit power (P_(HS-DPCCH)). The estimatedHS-DPCCH transmit power (P_(HS-DPCCH)) may be based on a UEconfiguration such as that a UE may configured with MIMO without aDC-HSDPA mode or with a DC-HSDPA or DC-HSDPA-MIMO mode such that poweroffset settings may be selected to protect various scenarios. InMC-HSDPA (e.g., 4C-HSDPA and 8C-HSDPA), upon activation/deactivation ofsecondary serving HS-DSCH cells, different power offset settings may beused for HS-DPCCH transmission. To accurately estimate HS-DPCCH transmitpower and, thus, optimize system performance in MC-HSDPA, P_(HS-DPCCH)may be estimated based on the UE cell activation status or based on thenumber of active cells mapped to HS-DPCCH (or HS-DPCCH₂ if HS-DPCCH₂ maybe configured and transmitted in 8C-HSDPA, or HS-DPCCH_(k) if k HS-DPCCHmay be configured and transmitted in MC-HSDPA). The estimated HS-DPCCHtransmit power may be based on P_(DPCCH,target) and the power offsetsetting for HS-DPCCH according to the latest UE cell activation statusor the number of active cells mapped to HS-DPCCH (or HS-DPCCH₂ ifHS-DPCCH₂ may be configured and transmitted in 8C-HSDPA, or HS-DPCCH_(k)if k HS-DPCCH is configured and transmitted in MC-HSDPA) before or whenthe UE may estimate the HS-DPCCH transmit power.

In one embodiment, the estimated HS-DPCCH transmit power may be based onP_(DPCCH,target) and the greatest of the power offset setting forHS-DPCCH according to a UE cell activation status before or when the UEestimates the HS-DPCCH transmit power. For example, if a UE may beconfigured with 8 carriers and may be in a MIMO mode, at TTI n, thenumber of active cells mapped to HS-DPCCH (or HS-DPCCH₂) may be 4 suchthat the estimated HS-DPCCH transmit power may be based onP_(DPCCH,target) and the greatest of (D_(ACK)+2), (D_(NACK)+2) and(D_(CQI)+2) where D_(ACK), D_(NACK) and D_(CQI) are the most recentsignalled values; and at TTI (n+1), the number of active cells mapped toHS-DPCCH (or HS-DPCCH2) may be 2 such that the estimated HS-DPCCHtransmit power may be based on P_(DPCCH,target) and the greatest of(D_(ACK)+1), (D_(NACK)+1) and (D_(CQI)+1) where D_(ACK), D_(NACK) andD_(CQI) are the most recent signalled values.

According to another embodiment, differences may be distinguished forCQI types A and/or B. For example, at TTI n, the number of active cellsmapped to HS-DPCCH (or HS-DPCCH2) may be 4 such that the estimatedHS-DPCCH transmit power may be based on P_(DPCCH,target) and thegreatest of (D_(ACK)+2), (D_(NACK)+2) and (D_(CQI)+2) when CQI of type Amay be configured to be transmitted and the greatest of (D_(ACK)+2),(D_(NACK)+2) and (D_(CQI)+1) when CQI of type B may be configured to betransmitted (e.g. where D_(ACK), D_(NACK) and D_(CQI) may be the mostrecent signalled values). Additionally, at TTI (n+1), the number ofactive cells mapped to HS-DPCCH (or HS-DPCCH2) may be 2 such that theestimated HS-DPCCH transmit power may be based on P_(DPCCH,target) andthe greatest of (D_(ACK)+1), (D_(NACK)+1) and (D_(CQI)+1) when CQI oftype A may be configured to be transmitted and the greatest of(D_(ACK)+1), (D_(NACK)+1) and D_(CQI) when CQI of type B may beconfigured to be transmitted (e.g. where D_(ACK), D_(NACK) and D_(CQI)may be the most recent signalled values).

If an E-DCH TTI may be 10 ms, the number of active cells mapped toHS-DPCCH may change and accordingly the power offset setting forHS-DPCCH during the 10 ms TTI may change. In one embodiment, a UE mayignore such a change, and the estimated HS-DPCCH transmit power may bebased on P_(DPCCH,target) and the power offset setting for HS-DPCCHaccording to the latest UE cell activation status or the number ofactive cells mapped to HS-DPCCH (or HS-DPCCH₂ if HS-DPCCH₂ may beconfigured and transmitted in 8C-HSDPA, or HS-DPCCH_(k) if k HS-DPCCHmay be configured and transmitted in MC-HSDPA) before or when the UE mayestimate HS-DPCCH transmit power at each 10 ms TTI. At the next 10 msTTI (or subsequent TTI), the estimated HS-DPCCH transmit power may bebased on P_(DPCCH,target) and the power offset setting for HS-DPCCHaccording to the latest UE cell activation status that may change duringthe previous 10 ms TTI and may be kept unchanged until or when a UE mayestimate the HS-DPCCH transmit power at the current 10 ms TTI, or maychange right before the UE may estimate HS-DPCCH transmit power at thecurrent 10 ms TTI.

According to example embodiments, when more than one HS-DPCCH may beconfigured and transmitted in MC-HSDPA (e.g. 2 HS-DPCCHs may beconfigured and transmitted in 8C-HSDPA, denoted as HS-DPCCH andHS-DPCCH₂ (or HS-DPCCH2)), the number of active cells mapped to HS-DPCCHand HS-DPCCH2 may be different, and the power offset setting forHS-DPCCH and HS-DPCCH2 may be different at the same TTI or slot suchthat the estimated HS-DPCCH transmit power may be based onP_(DPCCH,target) and the power offset setting for each individualHS-DPCCH (e.g. HS-DPCCH or HS-DPCCH₂) according to the latest UE cellactivation status. Also, when the UE may be configured with DC-HSUPA,P_(DPCCH,target) may refer to or define the estimated Primary ActivatedFrequency DPCCH power and the embodiments described above may be appliedto estimate HS-DPCCH transmit power.

Although various embodiments may be described herein within the contextof 8C-HSDPA in 3GPP UMTS wireless communications, the embodiments may beextended to MC-HSDPA with a different M value than 8, and may also beapplied to any wireless technology with multiple carrier configurationsuch as carrier aggregation (CA) in LTE.

Additionally, throughout the document, “multi-carriers” and“multi-cells,” and “secondary carriers” and “secondary cells” may beused interchangeably. The methods proposed herein may be applied toeither the multi-carrier operations or multi-cell operations, andalthough some embodiments may be disclosed with reference tomulti-carrier operations, they may be applicable for the multi-celloperations, and vice versa. The multi-cell operations may be implementedon the same frequency (e.g., carrier) or different frequencies.

Furthermore, although features and elements are described above inparticular combinations, one of ordinary skill in the art willappreciate that each feature or element can be used alone or in anycombination with the other features and elements. In addition, themethods described herein may be implemented in a computer program,software, or firmware incorporated in a computer-readable medium forexecution by a computer or processor. Examples of computer-readablemedia include electronic signals (transmitted over wired or wirelessconnections) and computer-readable storage media. Examples ofcomputer-readable storage media include, but are not limited to, a readonly memory (ROM), a random access memory (RAM), a register, cachememory, semiconductor memory devices, magnetic media such as internalhard disks and removable disks, magneto-optical media, and optical mediasuch as CD-ROM disks, and digital versatile disks (DVDs). A processor inassociation with software may be used to implement a radio frequencytransceiver for use in a WTRU, UE, terminal, base station, RNC, or anyhost computer.

1-25. (canceled)
 26. A wireless transmit/receive unit (WTRU), the WTRUcomprising: a processor configured to: receive an order type and anorder mapping; determine an activation status of closed loop transmitdiversity (CLTD) and a configuration associated with an antenna of theWTRU based on at least the order type and the order mapping, wherein theorder type comprises three bits ‘011’ and the order mapping comprisesthree bits, and wherein the order type and different sequences of theorder mapping indicate the activation status of CLTD and theconfiguration associated with the antenna; and based on the activationstatus of CLTD and the configuration associated with the antenna:activate or deactivate CLTD; and apply the configuration to the antenna.27. The WTRU of claim 26, wherein the order type and the order mappingare received via a high speed shared control channel (HS-SCCH) order.28. The WTRU of claim 26, wherein the configuration associated with theantenna indicates an activation status of single transmission on theantenna.
 29. The WTRU claim 28, wherein the processor is configured todetermine that the activation status of CLTD is active and theactivation status of single transmission on the antenna is inactive whenthe three bits of the order mapping include a value of ‘111.’
 30. TheWTRU of claim 28, wherein the processor is configured to determine thatthe activation status of CLTD is inactive and the activation status ofsingle transmission on the antenna is active when the three bits of theorder mapping include a value of at least one of ‘101’, ‘110’, ‘001’, or‘010.’
 31. The WTRU of claim 26, wherein the processor being configuredto apply the configuration to the antenna includes the processor beingconfigured to activate single transmission with no secondary dedicatedphysical control channel (S-DPCCH) on the antenna or to deactivatesingle transmission with no S-DPCCH on the antenna.
 32. The WTRU ofclaim 26, wherein the processor being configured to determine theactivation status of CLTD and the configuration associated with theantenna based on at least the order type and the order mapping includesthe processor being configured to: compare the received order type withone or more order types in a mapping table; compare the received ordermapping with one or more order mappings in the mapping table; access theactivation status of CLTD and the configuration associated with theantenna if the received order type matches one of the one or more ordertypes in the mapping table and the received order mapping matches one ofthe one or more order mappings in the mapping table; and signal theactivation status of CLTD and the configuration associated with theantenna.
 33. A method for managing control signaling, the methodcomprising: receiving an order type and an order mapping; determining anactivation status of closed loop transmit diversity (CLTD) and aconfiguration associated with an antenna of a wireless transmit/receiveunit (WTRU) based on at least the order type and the order mapping,wherein the order type comprises three bits ‘011’ and the order mappingcomprises three bits, and wherein the order type and different sequencesof the order mapping indicate the activation status of CLTD and theconfiguration associated with the antenna; and based on the activationstatus of CLTD and the configuration associated with the antenna:activating CLTD; and applying the configuration to the antenna.
 34. Themethod of claim 33, wherein the order type and the order mapping arereceived via a high speed shared control channel (HS-SCCH) order. 35.The method of claim 33, wherein the configuration associated with theantenna indicates an activation status of single transmission on theantenna and wherein determining the configuration associated with theantenna includes determining the activation status of singletransmission on the antenna.
 36. The method of claim 35, furthercomprising determining that the activation status of CLTD is active andthe activation status of single transmission on the antenna is inactivewhen the three bits of the order mapping include a value of ‘111.’ 37.The method of claim 35, further comprising determining that theactivation status of CLTD is inactive and the activation status ofsingle transmission on the antenna is active when the three bits of theorder mapping include a value of at least one of ‘101’, ‘110’, ‘001’, or‘010.’
 38. The method of claim 33, wherein applying the configuration tothe antenna includes activating single transmission with no secondarydedicated physical control channel (S-DPCCH) on the antenna ordeactivating single transmission with no S-DPCCH on the antenna.
 39. Themethod of claim 33, wherein determining the activation status of CLTDand the configuration associated with the antenna based on at least theorder type and the order mapping includes: comparing the received ordertype with one or more order types in a mapping table; comparing thereceived order mapping with one or more order mappings in the mappingtable; accessing the activation status of CLTD and the configurationassociated with the antenna if the received order type matches one ofthe one or more order types in the mapping table and the received ordermapping matches one of the one or more order mappings in the mappingtable; and signaling the activation status of CLTD and the configurationassociated with the antenna.